Quick filters:
Page 19 of 22
Conidia Stock Photos and Images
RMRD6T65–. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. 30 CULTURAL STUDIES OF SPECIES <JE PEKICILLIUM. of a main branch and one lateral branch, each producing a whorl of branchlets bearing crowded verticils of conidiiferous cells, 12-14 by 3^. Conidia breaking off in masses in handling old cultures, which rise in clouds when shaken. Pronounced odor in cul- tures containing cane sugar. Chains of conidia loosely divergent, long; conidia 2-3 by 3-5/t, cylindrical to elliptical or slightly ovate, clear green by transmitted l
RMRGW241–. Bulletin. Natural history; Natural history. June 1941 CARTER: OAK DISEASES IN ILLINOIS 207 periderm and epidermis are ruptured by the time the conidia are mature. An erumpent stroma is shown in vertical sec- tion in fig. 12. Stromata are black, val- soid, tubercular, pulvinate, compact, 550- 2000 ,, in diameter and 400-600 /j, high,. Fig. 12.—Portion of a stroma o( Cylospora. The erumpent appearance of the stroma is shown in vertical section. The black stromatic tissue with its locules and spores is embedded in the cankerous host tissue. X 5.S. ^ d. Please note that these images are extract
RMRDJH0K–. The essentials of botany. Botany. Fia. 78. Fis. 79. OS, apiece of a vesetative hypha, m, m, Upon a fragment of tte epidermis of the leaf of the grape, and to wliioh it is fas- tened by the suckers, A; o, hypha, with the suckers, h, seen in side view. Mag Pig. 78.- Grape-blight (Erysiphe). ': of thf nifled 370 times. Fia. 79.—Grrass-blight (Erysiphe communis), a, vegetative filaments, with a few suckers; 6, branches bearing conidia; c, separated conidia. Magnified 135 times. of the one and the aerial and parasitic or saprophytic habits of the other. 325. In the Blights, which are all parasiti
RMRH9KP6–. Botanisk tidsskrift. Plants; Plants -- Denmark. - 220 — Stilbum-form as coremia being until 2 mm. in height. As shows the figure these coremia are producing conidia from their whole surface; the conidia are cylindric-clavate or obpyriform, 2—3 septated, 50 — 60;/ X 18—20/i, and the average breadth of the conidiophores, which are somewhat varying in length, is about 10/i. On bark of Bauhinia sp.: Las Trincheras, 15. 12. 91 (H. L.). Sterigmatocystis dipus sp. n. — fig. 6. Hyphis repentibus septatis, 4—6/^ diam., hyalinis; fertilibus dipo- dibus, stricte erectis, non septatis nee ramosis, circ.
RMRDE6TE–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 61.—S. graminicola. Conidiophores and co- n i d i a ; germinating conidia and zoo- spores. After Butler.. Fig. 62.—S. graminicola, oo- gonium, oospore and an- theridium in section. Af- ter Stevens. On millet (Setaria italica), pearl millet, fox tail and com; in India of considerable economic importance.^* S. macrospora Sacc. has been reported in com tassels and on wheat in Italy and the United States.*^' ^ Conidia unknown; oogonia embedded firmly in the tissue of the host, not causing disintegration as in S. graminicola; oospo
RMRDE51X–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 599 Branches circinate at apex; conidia mesogenous, muricate 3. Acrospeira. Branches spirally twisted; conidia exogenous 4. Streptothrix, p. 599. Hyphae simple or with straight branches 5. Virgaria. All hyphae more or less creeping Branches curved or lash-like. . 6. Campsotrichum. Branches not curved ' Conidia spiny, rarely smooth 7. Zygodesmus, p. 599. Conidia smooth Conidia sessile 8. Trichosporium. Conidia on stalks Conidia on tooth-like sterig- mata 9. Rhinocladium. Conidia on jar-like stalks
RMRDET6J–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. Fig. 253.—Penicillium atramentosum. a, b, c, d, branching of conidial fructifica- tions showing unequal length of branching; e, /, conidiiferous cell and chain of co- nidiospores; g, h, j, sketches of conidial fructifications; i, conidiospores; m, n, o, r, germination of spores. (After Thorn.). ^i:'y Fig. 254.—Penicillium lilacinum. a, 6, c, Short conidiophores and verticils of conidiiferous cells; d, conidiiferous cell, solitary and sessile; e, conidia;/, g, h, sketches of conidial fru
![. The fungi which cause plant disease . Plant diseases; Fungi. 522 THE FUNGI WHICH CAUSE PLANT DISEASE The cause of leaf spots of tomato. It was noted in New Jersey about 1893»" and in Ohio in ISQG.^'^ It is one of the serious tomato pests. S. lactucae Pass.^^"* Spots irregular, brownish, angulate, sometimes destroying the entire leaf, pycnidia minute, punctiform, scattered, 90 n in diameter, conidia filiform, straight or curved, 25- 30 X 1.7-2 M- On lettuce. S. consimilis E. & M.'* Distinguishable from the preceding by the more indefinite spots, slightly larger pycnidia (90-100 Stock Photo](https://c8.alamy.com/comp/RDE58R/the-fungi-which-cause-plant-disease-plant-diseases-fungi-522-the-fungi-which-cause-plant-disease-the-cause-of-leaf-spots-of-tomato-it-was-noted-in-new-jersey-about-1893quot-and-in-ohio-in-isqg-it-is-one-of-the-serious-tomato-pests-s-lactucae-passquot-spots-irregular-brownish-angulate-sometimes-destroying-the-entire-leaf-pycnidia-minute-punctiform-scattered-90-n-in-diameter-conidia-filiform-straight-or-curved-25-30-x-17-2-m-on-lettuce-s-consimilis-e-amp-m-distinguishable-from-the-preceding-by-the-more-indefinite-spots-slightly-larger-pycnidia-90-100-RDE58R.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 522 THE FUNGI WHICH CAUSE PLANT DISEASE The cause of leaf spots of tomato. It was noted in New Jersey about 1893»" and in Ohio in ISQG.^'^ It is one of the serious tomato pests. S. lactucae Pass.^^"* Spots irregular, brownish, angulate, sometimes destroying the entire leaf, pycnidia minute, punctiform, scattered, 90 n in diameter, conidia filiform, straight or curved, 25- 30 X 1.7-2 M- On lettuce. S. consimilis E. & M.'* Distinguishable from the preceding by the more indefinite spots, slightly larger pycnidia (90-100 Stock Photo")
RMRDE58R–. The fungi which cause plant disease . Plant diseases; Fungi. 522 THE FUNGI WHICH CAUSE PLANT DISEASE The cause of leaf spots of tomato. It was noted in New Jersey about 1893»" and in Ohio in ISQG.^'^ It is one of the serious tomato pests. S. lactucae Pass.^^"* Spots irregular, brownish, angulate, sometimes destroying the entire leaf, pycnidia minute, punctiform, scattered, 90 n in diameter, conidia filiform, straight or curved, 25- 30 X 1.7-2 M- On lettuce. S. consimilis E. & M.'* Distinguishable from the preceding by the more indefinite spots, slightly larger pycnidia (90-100
![. The fungi which cause plant disease . Plant diseases; Fungi. 550 THE FUNGI WHICH CAUSE PLANT DISEASE 100-200 X 4 /I, browTiish; conidia falcate, 25 x 4 n; conidiophores ovoid, 20 X 8 ii., hyaline to fuscous. This is believed to be the chief cause of the red rot of sugar- cane."* It was reported in" the United States by Edgerton,"^ also by Stevens.™ Inoculation experiments indicate that it is distinct from C. lineola, on sorghum and Johnson grass, which it resembles morphologically. C. cereale Manns."^ Spots circular to ovoid, 30 mm.; acervuli dark brown, or black; setae f Stock Photo](https://c8.alamy.com/comp/RDE56P/the-fungi-which-cause-plant-disease-plant-diseases-fungi-550-the-fungi-which-cause-plant-disease-100-200-x-4-i-browtiish-conidia-falcate-25-x-4-n-conidiophores-ovoid-20-x-8-ii-hyaline-to-fuscous-this-is-believed-to-be-the-chief-cause-of-the-red-rot-of-sugar-canequot-it-was-reported-inquot-the-united-states-by-edgertonquot-also-by-stevens-inoculation-experiments-indicate-that-it-is-distinct-from-c-lineola-on-sorghum-and-johnson-grass-which-it-resembles-morphologically-c-cereale-mannsquot-spots-circular-to-ovoid-30-mm-acervuli-dark-brown-or-black-setae-f-RDE56P.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 550 THE FUNGI WHICH CAUSE PLANT DISEASE 100-200 X 4 /I, browTiish; conidia falcate, 25 x 4 n; conidiophores ovoid, 20 X 8 ii., hyaline to fuscous. This is believed to be the chief cause of the red rot of sugar- cane."* It was reported in" the United States by Edgerton,"^ also by Stevens.™ Inoculation experiments indicate that it is distinct from C. lineola, on sorghum and Johnson grass, which it resembles morphologically. C. cereale Manns."^ Spots circular to ovoid, 30 mm.; acervuli dark brown, or black; setae f Stock Photo")
RMRDE56P–. The fungi which cause plant disease . Plant diseases; Fungi. 550 THE FUNGI WHICH CAUSE PLANT DISEASE 100-200 X 4 /I, browTiish; conidia falcate, 25 x 4 n; conidiophores ovoid, 20 X 8 ii., hyaline to fuscous. This is believed to be the chief cause of the red rot of sugar- cane."* It was reported in" the United States by Edgerton,"^ also by Stevens.™ Inoculation experiments indicate that it is distinct from C. lineola, on sorghum and Johnson grass, which it resembles morphologically. C. cereale Manns."^ Spots circular to ovoid, 30 mm.; acervuli dark brown, or black; setae f
RMRGJH7K–. Bulletin of the British Museum (Natural History). Botany; Botany. E ^§1% 1%^ y. 10/im Fig. 27 Phoma peltigerae (H-KARST 2041—holotype). A, Surface view of pycnidium. B, Vertical section of pycnidium. C, Surface view of pycnidial wall. D, Conidiogenous cells and pycnidial wall. E, Conidia. Observations: Phoma peltigerae recalls P. cytospora but differs in the broader conidia, thickening of the pycnidial wall cells, and larger pycnidia, as well as in occurring on quite different hosts. Phyllosticta peltigerae was originally described from 'Mustiala' but no material under this name from that lo
RMRD6T5X–. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. WW lillW j Fig. i. Penicillium rnt/nttnrti Thorn: a, jciri of conidiophore and of base of fructification, highly mag- Ing production of basidia on sides as well as a< apex of basidiophore; 6, c, other types of branching; â¢/. young conidiophore jus! branching; <, /. basidia and the formation of conidia, highly magnified; <j, U,j. diagrams of types of fructification as seen under low power i < 80); /.-. /, m, u, germina- tion of conidia ana new conidia produc
![. Bulletin of the British Museum (Natural History). Botany; Botany. Fig. 19 Lichenosticta alcicornaria. A-E (Rasanen, Lick. Exs. no. 600, K); A, pycnidia on podetia of the host; B, vertical section of pycnidium; C, cells from the pycnidial wall; D, chains of conidiogenous cells; E, conidia. F (Hafellner 1834), Conidiogenous cells and conidia. G (BM—isotype), Conidiogenous cells and conidia. conspicuous narrow proliferations) 1-1 "5 /mi wide. Conidia adhering in slime and extruded as a gelatinous drop, lacriform, plano-convex to concavo-convex, rounded at the apex and distinctly attenuated Stock Photo](https://c8.alamy.com/comp/RGGD0W/bulletin-of-the-british-museum-natural-history-botany-botany-fig-19-lichenosticta-alcicornaria-a-e-rasanen-lick-exs-no-600-k-a-pycnidia-on-podetia-of-the-host-b-vertical-section-of-pycnidium-c-cells-from-the-pycnidial-wall-d-chains-of-conidiogenous-cells-e-conidia-f-hafellner-1834-conidiogenous-cells-and-conidia-g-bmisotype-conidiogenous-cells-and-conidia-conspicuous-narrow-proliferations-1-1-quot5-mi-wide-conidia-adhering-in-slime-and-extruded-as-a-gelatinous-drop-lacriform-plano-convex-to-concavo-convex-rounded-at-the-apex-and-distinctly-attenuated-RGGD0W.jpg ". Bulletin of the British Museum (Natural History). Botany; Botany. Fig. 19 Lichenosticta alcicornaria. A-E (Rasanen, Lick. Exs. no. 600, K); A, pycnidia on podetia of the host; B, vertical section of pycnidium; C, cells from the pycnidial wall; D, chains of conidiogenous cells; E, conidia. F (Hafellner 1834), Conidiogenous cells and conidia. G (BM—isotype), Conidiogenous cells and conidia. conspicuous narrow proliferations) 1-1 "5 /mi wide. Conidia adhering in slime and extruded as a gelatinous drop, lacriform, plano-convex to concavo-convex, rounded at the apex and distinctly attenuated Stock Photo")
RMRGGD0W–. Bulletin of the British Museum (Natural History). Botany; Botany. Fig. 19 Lichenosticta alcicornaria. A-E (Rasanen, Lick. Exs. no. 600, K); A, pycnidia on podetia of the host; B, vertical section of pycnidium; C, cells from the pycnidial wall; D, chains of conidiogenous cells; E, conidia. F (Hafellner 1834), Conidiogenous cells and conidia. G (BM—isotype), Conidiogenous cells and conidia. conspicuous narrow proliferations) 1-1 "5 /mi wide. Conidia adhering in slime and extruded as a gelatinous drop, lacriform, plano-convex to concavo-convex, rounded at the apex and distinctly attenuated
RMRGW1D9–. Bulletin. Natural history; Natural history. June, 1955 Curl: Oak Wilt Inocula 295 table 7. Spores in the dry atmosphere were still viable after 250 days at 0, 12, and 16 degrees, table 8. The gcrminabil- ity of conidia from both the humid and the dry atmospheres decreased with time at all temperatures, figs. 10 and 11. When the longevity and germinability of spores stored in a dry atmosphere were plotted (number of days on a logarithmic scale), the decrease in germinability of. 10 15 TIME (DAYS) 45 55 162 Fig. 10.—Germination of conidia of Endoconidiophora fagacearum stored at six tempera- t
RMRH1N8E–. British fungus-flora. A classified text-book of mycology. Fungi -- Great Britain. 56 FUNGUS-FLORA.. FIGUEES ILLUSTRATING THE TREMELLINEAE. Fig. 1, Aiiricidaria mesentcrica, a small specimen; nat. size;—Fig. 2, basidium and spore of same ; liighly mag.—Fig. 3, Nacmatelia encephala, section of, showing the central nucleus; nat. size;^-Fig. 4, Uirneola anricula-judae, small specimen ; nat. size ;—Fig. 5. Dacryopsin nuda; nat. size;—Fig. G, portion of head of same, showing the densely fasciculate conidiophores with conidia, also basidia bearing three septata basidia sjjores; higldy mag.;—Fig. 7,
RMRDE57P–. The fungi which cause plant disease . Plant diseases; Fungi. 542 THE FUNGI WHICH CAUSE PLANT DISEASE G. variabile Lau. grows on Ribes alpinum. G. curvatum Oud. is described as a currant parasite. G. malicorticis Cor.'^ Caulicolous; spots brownish, slightly depressed, irregular in outline; acervuli minute, erumpent; conidia elliptic, curved, hyaline or greenish-tinged, granular, 24 x 6 /*• On apples in northwestern United States. Neofabrea has been reported as genetically connected.*^* G. cydonisB Mont, is re- corded as a parasite on the quince. G. musarum C. & M. is a common wound parasi
RMRDE4W9–. The fungi which cause plant disease . Plant diseases; Fungi. 644 THE FUNGI WHICH. CAUSE PLANT DISEASE Fig. 434.—lUospo- rium maculicola. After Saccardo. or mottled with gray and with a small gray spot near the center, 5-15 mm. in diameter; sporodochia hypophyllous, minute, gelat- inous, yellow-amber, becoming black, spherical, becoming discoid or irregular, 150-160 /x in diameter; conidio- phores branched; conidia oblong, 1-3.5 x 4 /i. It is said by Sheldon '^^ to be one of the most common and destructive causes of leaf spots of the apple often resulting in nearly complete de- foliation. In
RMRDDAW6–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 275 =Fuscicoccum veronense). Pycnidia formed on old leaves on the ground, erumpent, subcuticular, brown, 200-300 /i; conidia numerous, oblong, ovoid to fusoid, 7-11 x 3-i n. The conidial form on sycamore and oak, first described in 1848, is common on leaves and young branches, the mycelium checking the sap-flow and causing death of surround- ing tissue. A stroma is formed on the outer layers of the mesophyll and from this arise the short conidiophores to constitute the acervulus. Infection experi
RMRH09C1–. Bulletin. Mycology; Fungi; Botany. ENDOCONIDIUM TEMULENTOM. 117 duccns ; sporophoris hyalinis, septatis, guttatis, subtortuosis, 3ft latis, bis terve repetito ramosis ; conidia hyalina, e sphaerico ovoï- dea, in inleriore ramulorum sporophori catenulatim nascentia, dein libéra, 2,5 p circiter. In tegumento grani Secalis cerealis, « Miallet, Dordogne » 1891. Hoc granum in panem conversum stuporem concitavit apud homines et bestias qui ederant. Fusarium miniatum îiov. sp. Prillieux et Delacroix (Fig. 2). Miniatum, pulvinulatum vel subeflusum ; hyphis sterilibus hyali- nis, repentibus, septatis
RMRDDBK1–. The fungi which cause plant disease . Plant diseases; Fungi. 208 THE FUNGI WHICH CAUSE PLANT DISEASE P. ruba (Pers.) D. C. causes reddish spots on the leaves of Prunus. Stroma at first bearing pycnidia (Libertella rubra) with filiform hooked, con- tinuous conidia. Perithecia produced on old leaves, bearing ellipsoid to elongate asci; spores 10-13 x 6 m, smooth. The invaded leaf'tissue is colored by the mycelium which bears a reddish oil. Nu- merous perithecia are immersed in the diseased area and, opening to the surface, extrude spores which seem incapable of in- fecting. During winter the s
RMRDE4XF–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 627 apically variable in form, ovate to elongate, curved, 1 to 5-septate, subhyaline, 15-90 x 4-6 n. In America this potato parasite was noted in Vermont in 1905 and study of herbarium material revealed two earlier collections. In Germany it was known in 1854 and it has been seen in many parts of Europe since, sometimes in epidemic form.'*^ Conidia are abundant on the spots on stalks emergmg from the stomata. The superior and inferior hyphse differ considerably in length and branching. Brown bead
RMRDE0MP–. Diseases of truck crops and their control . Vegetables. Fig. 20. Beet Diseases. fl. Crown gall, b. scab, c, downy mildew, d. Conidiophore of Peronospora schachtii arising from a stomate of an infected beet leaf, e. germinating zoospore of P. schach- tii,/. oospore of P. schachtii, g. Cercospora leaf spot (after Halsted), ft. conidiophore and conidia of Cercospora beticola (after Duggar), i, Phoma leaf spot (after Pool and McKay), k, pycnidium of Phoma beta (after T. Johnson) {d.-f. after PrilUeux).. Please note that these images are extracted from scanned page images that may have been digit
![. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 567. Myceliophthora Costant (p. 566) Sterile hyphse creeping, simple or somewhat branched, bearing conidia at the apex; conidia solitary, acrogenous, ovoid. ^^^ A single species M. lutea Costant. " causes disease of cultivated mush- rooms in France."' ,^—,, Ophiocladium Cavara (p. 566) '"^^I^^^'C^ Fertile hyphse fasciculate, tor- G -vC tuose; conidia acrogenous, ellip- Fia.381.—O. hordeiaccrvulus and J.. spores. After Cavara. Two species of which one, O. hordei Cav., parasitizes ba Stock Photo](https://c8.alamy.com/comp/RDE54Y/the-fungi-which-cause-plant-disease-plant-diseases-fungi-the-fungi-which-cause-plant-disease-567-myceliophthora-costant-p-566-sterile-hyphse-creeping-simple-or-somewhat-branched-bearing-conidia-at-the-apex-conidia-solitary-acrogenous-ovoid-a-single-species-m-lutea-costant-quot-causes-disease-of-cultivated-mush-rooms-in-francequot-ophiocladium-cavara-p-566-quotic-fertile-hyphse-fasciculate-tor-g-vc-tuose-conidia-acrogenous-ellip-fia381o-hordeiaccrvulus-and-j-spores-after-cavara-two-species-of-which-one-o-hordei-cav-parasitizes-ba-RDE54Y.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 567. Myceliophthora Costant (p. 566) Sterile hyphse creeping, simple or somewhat branched, bearing conidia at the apex; conidia solitary, acrogenous, ovoid. ^^^ A single species M. lutea Costant. " causes disease of cultivated mush- rooms in France."' ,^—,, Ophiocladium Cavara (p. 566) '"^^I^^^'C^ Fertile hyphse fasciculate, tor- G -vC tuose; conidia acrogenous, ellip- Fia.381.—O. hordeiaccrvulus and J.. spores. After Cavara. Two species of which one, O. hordei Cav., parasitizes ba Stock Photo")
RMRDE54Y–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 567. Myceliophthora Costant (p. 566) Sterile hyphse creeping, simple or somewhat branched, bearing conidia at the apex; conidia solitary, acrogenous, ovoid. ^^^ A single species M. lutea Costant. " causes disease of cultivated mush- rooms in France."' ,^—,, Ophiocladium Cavara (p. 566) '"^^I^^^'C^ Fertile hyphse fasciculate, tor- G -vC tuose; conidia acrogenous, ellip- Fia.381.—O. hordeiaccrvulus and J.. spores. After Cavara. Two species of which one, O. hordei Cav., parasitizes ba
RMRDWBX7–. The essentials of botany. Botany. Fio. 70.—Resting spores of White Rust of Peppergrass; at A, still surrounded by oSgone. B, C, formation of zoospores; D, free zoospores. Magnified 400 times. plasm into zoospores (Fig. 70, B, G, D) whose subsequent development is like that described above in case of the conidia. Practical Studies.—(a) Collect a quantity of Green Felt and pre- serve it in a dish of water. After a few hours a large number of zoo- spores may be observed collected at the edge of the water nearest to the light. (J) Examine carefully mounted specimens of the bright-green fila- men
RMRDE5DD–. The fungi which cause plant disease . Plant diseases; Fungi. 492 THE FUNGI WHICH CAUSE PLANT DISEASE P. apiicola Speg. is recorded on celery.'^ P. brassicse Thiim. on cabbage is probably identical with P. oleraceae. P. roumii Fr'on. is said to cause a serious cotton disease in Africa.*' P. batatSB E. & H.*^ Pycnidia blackish, gregarious, immersed; conidia terete, ovoid; conidiophores slender. The cause of dry rot of sweet pota- toes. P. chrysanthemi Vogl. is found on leaves of chrysanthemum causing them to wilt. P. malvacearum West is noted on European hollyhocks; P. devastatriz Berk, on
RMRDDBM1–. The fungi which cause plant disease . Plant diseases; Fungi. 204 THE FUNGI WHICH CAUSE PLANT DISEASE Germ tubes from ascospores or conidia enter the cortex and develop a rich mycelimn in the sieve tubes and soft host. This advances most rapidly during the dormant period of the bast. White or yellow stromata the size of a pin- head appear and bear numerous conidia. Later come the red perithecia whose ascospores ripen in winter or spring. N. ribis (Tode) Rab. Fig. 144.—n. ipo- Cespitose, Stroma compact; perithecia sub- of perithecia. globose, smooth; ostiole papillate; asci subclavate, After H
![. Diseases of truck crops and their control . Vegetables. Fig. 41. Squash Diseases. a. Showing squash blossoms invaded by the fungus Choanophora cucurbitarum, b. squash entirely rotted by the Choanophora '--- iA;^^,r.^^ â» Choanophora with ramuli developing on the prirji""-' - - â covered with a layer of conidia, e. conidia,/. sporanKm ^^iw !,â .. ^.i.ti. , 4^. Mi.. t,iii^>t spores with tufts of h^r-like appendages, h. m.i j-j. , , ' ,. Wolf), i. Fusarium wilt of young squash plants,;. Please note that these images are extracted from scanned page images that may have been Stock Photo](https://c8.alamy.com/comp/RDE0DX/diseases-of-truck-crops-and-their-control-vegetables-fig-41-squash-diseases-a-showing-squash-blossoms-invaded-by-the-fungus-choanophora-cucurbitarum-b-squash-entirely-rotted-by-the-choanophora-iar-choanophora-with-ramuli-developing-on-the-prirjiquotquot-covered-with-a-layer-of-conidia-e-conidia-sporankm-iw-!-iti-4-mi-tiiigtt-spores-with-tufts-of-hr-like-appendages-h-mi-j-j-wolf-i-fusarium-wilt-of-young-squash-plants-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-RDE0DX.jpg ". Diseases of truck crops and their control . Vegetables. Fig. 41. Squash Diseases. a. Showing squash blossoms invaded by the fungus Choanophora cucurbitarum, b. squash entirely rotted by the Choanophora '--- iA;^^,r.^^ â» Choanophora with ramuli developing on the prirji""-' - - â covered with a layer of conidia, e. conidia,/. sporanKm ^^iw !,â .. ^.i.ti. , 4^. Mi.. t,iii^>t spores with tufts of h^r-like appendages, h. m.i j-j. , , ' ,. Wolf), i. Fusarium wilt of young squash plants,;. Please note that these images are extracted from scanned page images that may have been Stock Photo")
RMRDE0DX–. Diseases of truck crops and their control . Vegetables. Fig. 41. Squash Diseases. a. Showing squash blossoms invaded by the fungus Choanophora cucurbitarum, b. squash entirely rotted by the Choanophora '--- iA;^^,r.^^ â» Choanophora with ramuli developing on the prirji""-' - - â covered with a layer of conidia, e. conidia,/. sporanKm ^^iw !,â .. ^.i.ti. , 4^. Mi.. t,iii^>t spores with tufts of h^r-like appendages, h. m.i j-j. , , ' ,. Wolf), i. Fusarium wilt of young squash plants,;. Please note that these images are extracted from scanned page images that may have been
RMRDJH2J–. The essentials of botany. Botany. Fio. 70.—Resting spores of White Rust of Peppeigrass; at 4, still surrounded by oBgone. B, C, formation of zoospores; D, free zoBspores. Magnified 400 times. plasm into zoospores (Fig. 70, B, G, B) whose subsequent development is like that described above in case of the conidia. Pi'acUcal Studies.—{a) Collect a quantity of Green Felt and pre- serve it in a dish of water. After a few hours a large number of zoo- spores may be observed collected at the edge of the water nearest to the light. (i) Examine carefully mounted specimens of the bright-green fila- men
RMRGJHG4–. Bulletin of the British Museum (Natural History). Botany; Botany. 28 D. L. HAWKSWORTH. 3^ ^^wPV-fc-j* â Fig. 14 Laeviomyces opegraphae (Eâholotype), vertical section of Opegrapha niveoatra lirellum with the hymenium partly replaced by a pycnidium of the Laeviomyces (x 500). and the emphasis placed on spore septation in traditional coelomycete systematics, it seems preferrable to retain two genera while intermediate taxa are unknown. Key to the species ! Pycnidia 40-60//m wide; pycnidial wall poorly developed and hyphal; conidia olivaceous brown, 3-4-5 x 1 5â2 jum Laeviomyces opegraphae (p. 2
RMRDE6K9–. The fungi which cause plant disease . Plant diseases; Fungi. 128 THE FUNGI WHICH CAUSE PLANT DISEASE .-â tents crowds toward the tips of these cells and a basal septum cuts off the ascus proper from the stalk cell, Fig. 88. The spores then form within the ascus. The ascospores may bud either before or after extrusion from the ascus, pro- ducing conidia, which may themselves bud indefinitely, producing secondary, tertiary, etc., crops. In this condition the conidia strongly resemble yeast cells. On the host plant ascospores germinate by germ tubes, which are ca- p a b 1 e of infecting prope
![. The essentials of botany. Botany. Fto. 78. Fie. 79. Fio. 7S.- Qrape-blight (Erysiphe). a, a piece of a vesetative. hjrpha, m, m, t of the â ' â " " 1 nified 370 times. upoa a fragment of tlie epidermis of the leaf of the grape, and to which it is fas-' tened by the suckers, ft; o, hjrpha, with the sueirers, h, seen in side view. Mag Fig. 79.âGrass-blight (Erysiphe communis), o, vegetative filaments, with a few suckers; &, branches bearing conidia; c, separated coiiidia. Magnified 135 times. of the one and the aerial and parasitic or saprophytic habits of the other. 325. In the Stock Photo](https://c8.alamy.com/comp/RDWBTK/the-essentials-of-botany-botany-fto-78-fie-79-fio-7s-qrape-blight-erysiphe-a-a-piece-of-a-vesetative-hjrpha-m-m-t-of-the-quot-quot-1-nified-370-times-upoa-a-fragment-of-tlie-epidermis-of-the-leaf-of-the-grape-and-to-which-it-is-fas-tened-by-the-suckers-ft-o-hjrpha-with-the-sueirers-h-seen-in-side-view-mag-fig-79grass-blight-erysiphe-communis-o-vegetative-filaments-with-a-few-suckers-amp-branches-bearing-conidia-c-separated-coiiidia-magnified-135-times-of-the-one-and-the-aerial-and-parasitic-or-saprophytic-habits-of-the-other-325-in-the-RDWBTK.jpg ". The essentials of botany. Botany. Fto. 78. Fie. 79. Fio. 7S.- Qrape-blight (Erysiphe). a, a piece of a vesetative. hjrpha, m, m, t of the â ' â " " 1 nified 370 times. upoa a fragment of tlie epidermis of the leaf of the grape, and to which it is fas-' tened by the suckers, ft; o, hjrpha, with the sueirers, h, seen in side view. Mag Fig. 79.âGrass-blight (Erysiphe communis), o, vegetative filaments, with a few suckers; &, branches bearing conidia; c, separated coiiidia. Magnified 135 times. of the one and the aerial and parasitic or saprophytic habits of the other. 325. In the Stock Photo")
RMRDWBTK–. The essentials of botany. Botany. Fto. 78. Fie. 79. Fio. 7S.- Qrape-blight (Erysiphe). a, a piece of a vesetative. hjrpha, m, m, t of the â ' â " " 1 nified 370 times. upoa a fragment of tlie epidermis of the leaf of the grape, and to which it is fas-' tened by the suckers, ft; o, hjrpha, with the sueirers, h, seen in side view. Mag Fig. 79.âGrass-blight (Erysiphe communis), o, vegetative filaments, with a few suckers; &, branches bearing conidia; c, separated coiiidia. Magnified 135 times. of the one and the aerial and parasitic or saprophytic habits of the other. 325. In the
![. The classification of lower organisms. Biology. 122] 'I'hc Classification of Lower Organisms. Fig. 24.—Zygomycetes: a-d, Rhizopus nigricans; a, sporangia x 50; b-d, prega- mctes, suspensors and gametes, and zygote x 200. e. Zygote of Phycomyccs nitens after Blakeslcc (1904). f, g, Conidiophore with young conidia, and mature conidia, of Syncephalis pycnosperma after Thaxtcr (1897). h, i, Conjugation of Synce- phalis nodosa after Thaxter, op. cit. j, Sporangium of Synccphalastrum raccmosum after Thaxter, op. cit. k, Sporangium of Flaplospoiangium lignicola after Martin (1937), x 1,000.. Please Stock Photo](https://c8.alamy.com/comp/REK8RF/the-classification-of-lower-organisms-biology-122-ihc-classification-of-lower-organisms-fig-24zygomycetes-a-d-rhizopus-nigricans-a-sporangia-x-50-b-d-prega-mctes-suspensors-and-gametes-and-zygote-x-200-e-zygote-of-phycomyccs-nitens-after-blakeslcc-1904-f-g-conidiophore-with-young-conidia-and-mature-conidia-of-syncephalis-pycnosperma-after-thaxtcr-1897-h-i-conjugation-of-synce-phalis-nodosa-after-thaxter-op-cit-j-sporangium-of-synccphalastrum-raccmosum-after-thaxter-op-cit-k-sporangium-of-flaplospoiangium-lignicola-after-martin-1937-x-1000-please-REK8RF.jpg ". The classification of lower organisms. Biology. 122] 'I'hc Classification of Lower Organisms. Fig. 24.—Zygomycetes: a-d, Rhizopus nigricans; a, sporangia x 50; b-d, prega- mctes, suspensors and gametes, and zygote x 200. e. Zygote of Phycomyccs nitens after Blakeslcc (1904). f, g, Conidiophore with young conidia, and mature conidia, of Syncephalis pycnosperma after Thaxtcr (1897). h, i, Conjugation of Synce- phalis nodosa after Thaxter, op. cit. j, Sporangium of Synccphalastrum raccmosum after Thaxter, op. cit. k, Sporangium of Flaplospoiangium lignicola after Martin (1937), x 1,000.. Please Stock Photo")
RMREK8RF–. The classification of lower organisms. Biology. 122] 'I'hc Classification of Lower Organisms. Fig. 24.—Zygomycetes: a-d, Rhizopus nigricans; a, sporangia x 50; b-d, prega- mctes, suspensors and gametes, and zygote x 200. e. Zygote of Phycomyccs nitens after Blakeslcc (1904). f, g, Conidiophore with young conidia, and mature conidia, of Syncephalis pycnosperma after Thaxtcr (1897). h, i, Conjugation of Synce- phalis nodosa after Thaxter, op. cit. j, Sporangium of Synccphalastrum raccmosum after Thaxter, op. cit. k, Sporangium of Flaplospoiangium lignicola after Martin (1937), x 1,000.. Please
RMRDH6PR–. Pharmaceutical botany. Botany; Botany, Medical. CP o Fig. 32.—Clasiceps purpurea. A. Young sclerotium, s, with old sphacelia, s.p. The apex of the dead ovary of rye. B. Upper part of ^, in longitudinal section, showing sphacelia, j. C. Transverse section through the sphacelia, more highly magnified, m. The mycelium, surrounded with the hyphae; b, bearing conidia; p. conidia fallen off; w, the wall of the ovary. D. Germinating conidia, forming sporidia, j-. {From Sayre after Backs.). Fig. 33-—Portion of Horn-shaped sclerotium of Clasiceps purpurea, bearing four stalked re- ceptacles. {From Sa
RMRDYC38–. The essentials of botany. Botany. PHTCOPHTTA. 157 (Ji) White Rusts occur on many plants: one (Albugo Candida) on sliepherd's-purse, peppergrass, radish, etc.; another (A. bliti) on Amaranthus ; and another (A. portulacse) on purslane. For conidia make very thin cross-sections of leaves, through a white-rust spot, and mount as above. The resting-spores (vphich are dark brown) are easily obtained in the leaves of Amaranthus and purslane. Systematic Literature.—Wolle, Freshwater Algae of the United States, 146-154. Saccardo, Sylloge Fun^orum, 7'. Flora of Ne- braska, 1 : 53-60, pi. IS, 13, 15,
![. Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 44. WEEKS AFTER 15 PLANTING Figure 8 - A. Relationship of population density of Fusarium oxysporum f. sp. radicis-lycopersici to time after planting in soils amended with three isolates of Trichoderma harzianum, one isolate of Penicillium restrictum, and one isolate of Aspergillus ochraceus at 5 X 105 conidia per isolate per plant under field conditions at planting date one (0"""0), planting date two (X- X), and planting date three (#— —#). The pathogen was added initially at 5000 chlamydospores per pl Stock Photo](https://c8.alamy.com/comp/RHG8J0/biological-control-of-fusarium-crown-rot-of-tomato-tomato-wilts-tomatoes-44-weeks-after-15-planting-figure-8-a-relationship-of-population-density-of-fusarium-oxysporum-f-sp-radicis-lycopersici-to-time-after-planting-in-soils-amended-with-three-isolates-of-trichoderma-harzianum-one-isolate-of-penicillium-restrictum-and-one-isolate-of-aspergillus-ochraceus-at-5-x-105-conidia-per-isolate-per-plant-under-field-conditions-at-planting-date-one-0quotquotquot0-planting-date-two-x-x-and-planting-date-three-the-pathogen-was-added-initially-at-5000-chlamydospores-per-pl-RHG8J0.jpg ". Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 44. WEEKS AFTER 15 PLANTING Figure 8 - A. Relationship of population density of Fusarium oxysporum f. sp. radicis-lycopersici to time after planting in soils amended with three isolates of Trichoderma harzianum, one isolate of Penicillium restrictum, and one isolate of Aspergillus ochraceus at 5 X 105 conidia per isolate per plant under field conditions at planting date one (0"""0), planting date two (X- X), and planting date three (#— —#). The pathogen was added initially at 5000 chlamydospores per pl Stock Photo")
RMRHG8J0–. Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 44. WEEKS AFTER 15 PLANTING Figure 8 - A. Relationship of population density of Fusarium oxysporum f. sp. radicis-lycopersici to time after planting in soils amended with three isolates of Trichoderma harzianum, one isolate of Penicillium restrictum, and one isolate of Aspergillus ochraceus at 5 X 105 conidia per isolate per plant under field conditions at planting date one (0"""0), planting date two (X- X), and planting date three (#— —#). The pathogen was added initially at 5000 chlamydospores per pl
RMRGK00E–. Bulletin of the British Museum (Natural History). Botany; Botany. Fig. 4 Cornutispora lichenicola (IMI 186831—holotype). A, Conidiogenous cells. B, Conidia. Reproduced from Hawksworth (1976 : 52). Somerset, Nettlecombe Park, on Parmelia sulcata, 20 September 1980, D. L. Hawkswvrth 5069 (IMI 251487!). Scotland, Kintyre, c. 7 km SW of Crinan, on islet N of Carsaig Island, on Lobaria pulmonaria, 14 August 1977, N. Brandt (E!, IMI 224707!; with Endophragmiella hughesii). —Italy: Sudtirol, Otztaler Alpen, Vinschgau, on Rhizoplaca chrysoleuca, 18 October 1975, J. Hafellner (GZU!; with Lichenoconiu
![. The fungi which cause plant disease . Plant diseases; Fungi. Fio. 155.âP. morbosa. b. magnified section of a knot showing the penthecia; c, conidiophores and conidia; d. section of a peri- thecmm showing numerous asci, one of which is shown more highly magnified at «,â /several of the two-celled ascospores germinating m water. After Longyear. P. morbosa (Schw.) Sacc.'^="i^"' =â¢>« Stromata elongate, cushion-shaped, rarely tubercular, up to 2 or. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorati Stock Photo](https://c8.alamy.com/comp/RDDBGG/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fio-155p-morbosa-b-magnified-section-of-a-knot-showing-the-penthecia-c-conidiophores-and-conidia-d-section-of-a-peri-thecmm-showing-numerous-asci-one-of-which-is-shown-more-highly-magnified-at-several-of-the-two-celled-ascospores-germinating-m-water-after-longyear-p-morbosa-schw-sacc=quotiquot-=gt-stromata-elongate-cushion-shaped-rarely-tubercular-up-to-2-or-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-colorati-RDDBGG.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fio. 155.âP. morbosa. b. magnified section of a knot showing the penthecia; c, conidiophores and conidia; d. section of a peri- thecmm showing numerous asci, one of which is shown more highly magnified at «,â /several of the two-celled ascospores germinating m water. After Longyear. P. morbosa (Schw.) Sacc.'^="i^"' =â¢>« Stromata elongate, cushion-shaped, rarely tubercular, up to 2 or. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorati Stock Photo")
RMRDDBGG–. The fungi which cause plant disease . Plant diseases; Fungi. Fio. 155.âP. morbosa. b. magnified section of a knot showing the penthecia; c, conidiophores and conidia; d. section of a peri- thecmm showing numerous asci, one of which is shown more highly magnified at «,â /several of the two-celled ascospores germinating m water. After Longyear. P. morbosa (Schw.) Sacc.'^="i^"' =â¢>« Stromata elongate, cushion-shaped, rarely tubercular, up to 2 or. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorati
RMRDY5H2–. British fungus-flora. A classified text-book of mycology. Fungi. 56 FUNGUS-FLOBA. 3. FIGUBES ILLUSTRATING THE TEEMELLINEAE. Fig. 1, Avrioularia mesenterica, a small speoimen; nat. size;—Fig. 2, basidium and spore of same ; highly mag.—^Fig, 3, Naematelia encepliala, section of, showing the central nucleus; nat. size;—Fig. 4, Hirneola auricula-mdae, small speoimen; nat. size ;—Fig. 5. Dacryopiie nuda; nat. size,;—^Fig. 6, portion of head of same, showing the densely fasciculate couidiopbores with conidia, also basidia bearing three septata basidia spores; highly mag.;—Fig. 7, UloeoUa saochari
RMRDE6RJ–. The fungi which cause plant disease . Plant diseases; Fungi. 98 THE FUNGI WHICH CAUSE PLANT DISEASE. 14 15 Fio. 67.—^P. Bchlcideni. 11. Mycelial threads between the large conductive cells of the leaf; (a) the mycelial thread; (b, b) branched or coiled haustoria; (c) branched haustorium wrapped about the nucleus. 13. Young conidiophorcs, (a, a) turn- ing toward the stoma, (b); (c) haustorium wrapped about the nucleus of the epidermal cell. 14. Mature conidiophore (a) with mature conidia, (c, c); (d) germ tube of conidium entering stoma. 15. Oospores, (a) mature oospore with old antheridium, (
RMRDE59Y–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 515 Pycnidia globose, without flat- tened base but on a stellate superficial subicle 2. Couturea. Pycnidia without a subicle, erumpent Pycnidia hairy 3. Wojnowicia. Pycnidia smooth 4. Hendersonia, p. 515. Pycnidia opening widely, with an operculum Pycnidia superficial, dark, hairy 5. Angiopoma. Pycnidia immersed, pale, smooth 6. Lichenopsis. Conidia appendaged Conidia 1-ciliate at each end 7. Cryptostictis, p. 516. Conidia 1-ciliate at base 8. Urohendersonia. Conidia with a round or cup-like appe
RMRDE577–. The fungi which cause plant disease . Plant diseases; Fungi. 548 THE FUNGI WHICH CAUSE PLANT DISEASE Spots subelliptic to irregular, depressed, brownish; acervuli scattered, surrounded by a few not very conspicuous black setfe; conidia oblong, ends rounded, straight or curved, 15-19 x 3.5-5.5 ft; conidiophores cylindric, simple, 45-55 fi. This fungus, generally known as C. lindemuthianum, is accord- trittiniciuse Conhcr. Starcfi Grains Fig. 369.—C. lindemuthianum. Showing relation of the fungus to the tissues of the bean. To the left above is a diagram of a section across a bean pod through
RMRDE5BK–. The fungi which cause plant disease . Plant diseases; Fungi. 500 THE FUNGI WHICH CAUSE PLANT DISEASE Fuckelia Bonordin (p. 483) Stroma erumpent, globose-pulvinate, substipitate, dark without, lighter within, with several angular pycnidial locules; conidia elliptic. A single species F. ribis Bon. on cm-rants in Europe is a conidial form of Cenangium vitesia. See p.. 151. Ceuthospora Grevielle (p. 483) Stroma coalescing, erumpent, cushion-shaped, leathery, many- chambered, all chambers opening by a common pore; conidia elongate cylindric, mostly straight. Some twenty-five species, chiefly sapr
RMRDE4WY–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 635 Stilbella Lindau (p. 633) Hyphae forming a coremium which is capitate above; conidio- phores borne on the cap; conidia small, often enclosed in shme. Over one hvmdred species chiefly saprophytes. (Commonly known as Stilbum but the type of the genus being a hymenomycete it was renamed.) S. flavida (Cke.) Kohl, causes a serious coffee disease. S. these Bern, is on tea in India. S. nanum Mas. causes the thread blight of tea. S. populi on poplar =Mycosphaerella populi. See p. 250. Rhombostilbella
RMRGKBK3–. Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 267. Fig. 42 Xanthoriicola physciae. A, Infected discoloured apothecia of Xanthoria parietina ( x 16). B, Conidiophores immersed in the thecium of the host ( x 1400). C-D, Conidiogenous cells ( x3500). E, Conidium in optical section and surface view ( x3500). F, Group of conidia ( x 3000). G, Conidia showing verrucose ornamentation ( x 11 000). A, F-G IMI 171822; B-E IMI 164974. F-G Scanning electron micrographs.. Please note that these images are extracted from scanned page images that may have been digi
![. Bulletin of the British Museum (Natural History). Botany; Botany. OqQ %0. 10/im Fig. 20A-F, Microcalicium subpediccllatum [anamorph] {Hafellner 1095): A, pycnidia on the host thallus; B, vertical section of pycnidium; C, cells from the upper part of the pycnidial wall; D, cells from the lower part of the pycnidial wall; E, conidiogenous cells: F, conidia. G-H, M. conversum [anamorph] (Santcsson 561H p.p); G, conidiogenous cells; H, conidia.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance o Stock Photo](https://c8.alamy.com/comp/RGJHDA/bulletin-of-the-british-museum-natural-history-botany-botany-oqq-0-10im-fig-20a-f-microcalicium-subpediccllatum-anamorph-hafellner-1095-a-pycnidia-on-the-host-thallus-b-vertical-section-of-pycnidium-c-cells-from-the-upper-part-of-the-pycnidial-wall-d-cells-from-the-lower-part-of-the-pycnidial-wall-e-conidiogenous-cells-f-conidia-g-h-m-conversum-anamorph-santcsson-561h-pp-g-conidiogenous-cells-h-conidia-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-o-RGJHDA.jpg ". Bulletin of the British Museum (Natural History). Botany; Botany. OqQ %0. 10/im Fig. 20A-F, Microcalicium subpediccllatum [anamorph] {Hafellner 1095): A, pycnidia on the host thallus; B, vertical section of pycnidium; C, cells from the upper part of the pycnidial wall; D, cells from the lower part of the pycnidial wall; E, conidiogenous cells: F, conidia. G-H, M. conversum [anamorph] (Santcsson 561H p.p); G, conidiogenous cells; H, conidia.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance o Stock Photo")
RMRGJHDA–. Bulletin of the British Museum (Natural History). Botany; Botany. OqQ %0. 10/im Fig. 20A-F, Microcalicium subpediccllatum [anamorph] {Hafellner 1095): A, pycnidia on the host thallus; B, vertical section of pycnidium; C, cells from the upper part of the pycnidial wall; D, cells from the lower part of the pycnidial wall; E, conidiogenous cells: F, conidia. G-H, M. conversum [anamorph] (Santcsson 561H p.p); G, conidiogenous cells; H, conidia.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance o
RMRGBB7P–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. PEACH SCAB AND ITS COISTTEOL. 13. Fig. 5.— Cladosporium carpophilum: a, Con- idiophores and conidia from fruit lesions; 6, conldiophores and conidia from twig lesions; c, conidiophore from leaf lesion; d, and e, fragments of mycelium from Lima-bean agar culture, showing develop- ment ofehlamydospores. Camera-lueida drawing. (Magnified 485 times.) the more exposed cells thicken and darken and the individual cells may assume the characters of chlamydospores (fig, 5, d and e). On old cul- tures on steamed peach twigs or c
RMREE3K3–. Comparative morphology of Fungi. Fungi. Fig. 72.—Basidiobolus ranarum. 1 to 3. A conidium has divided as in Fig. 70 into two halves which behave as gametangia and form a zygospore each. 4. Germinating zygospore. (1 to 3 X 335; 4 X 575; after Eidam, 1887.) conidia germinate with a single germ tube, which in insufficient nourish- ment, ends in a secondary conidium, but under favorable conditions develops to a mycelium with numerous sacs. This is coenocytic when young; after one or two days, however, it forms numerous septa. Finally. Yiq. 73.—Conidiobolus utriculosus. 1. Mycelium with condiopho
![. Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 225. Fig. 18 Hansfordiellopsis lichenicola. A, Conidiogenous cells, conidia and mycelium with hyphopodia- like cells. B-E, Conidia. A 1MI 55448c, a' URM 18781 (holotype), B 1MI 106122c, C IMI 99552a, D IMI 89824a and E IMI 81812. Hosts: On foliicolous lichens, particularly Gyalectidium aspidotum (Vain.) R. Sant., G. rotuli- forme Mull. Arg., Setomyces giganteae Bat. & Bez., 5". orchidae Bat. & Peres, and Tricharia species. Ascocarp formation in the hosts is apparently often inhibited by the p Stock Photo](https://c8.alamy.com/comp/RGKC75/bulletin-of-the-british-museum-natural-history-botany-the-lichenicolous-hyphomycetes-225-fig-18-hansfordiellopsis-lichenicola-a-conidiogenous-cells-conidia-and-mycelium-with-hyphopodia-like-cells-b-e-conidia-a-1mi-55448c-a-urm-18781-holotype-b-1mi-106122c-c-imi-99552a-d-imi-89824a-and-e-imi-81812-hosts-on-foliicolous-lichens-particularly-gyalectidium-aspidotum-vain-r-sant-g-rotuli-forme-mull-arg-setomyces-giganteae-bat-amp-bez-5quot-orchidae-bat-amp-peres-and-tricharia-species-ascocarp-formation-in-the-hosts-is-apparently-often-inhibited-by-the-p-RGKC75.jpg ". Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 225. Fig. 18 Hansfordiellopsis lichenicola. A, Conidiogenous cells, conidia and mycelium with hyphopodia- like cells. B-E, Conidia. A 1MI 55448c, a' URM 18781 (holotype), B 1MI 106122c, C IMI 99552a, D IMI 89824a and E IMI 81812. Hosts: On foliicolous lichens, particularly Gyalectidium aspidotum (Vain.) R. Sant., G. rotuli- forme Mull. Arg., Setomyces giganteae Bat. & Bez., 5". orchidae Bat. & Peres, and Tricharia species. Ascocarp formation in the hosts is apparently often inhibited by the p Stock Photo")
RMRGKC75–. Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 225. Fig. 18 Hansfordiellopsis lichenicola. A, Conidiogenous cells, conidia and mycelium with hyphopodia- like cells. B-E, Conidia. A 1MI 55448c, a' URM 18781 (holotype), B 1MI 106122c, C IMI 99552a, D IMI 89824a and E IMI 81812. Hosts: On foliicolous lichens, particularly Gyalectidium aspidotum (Vain.) R. Sant., G. rotuli- forme Mull. Arg., Setomyces giganteae Bat. & Bez., 5". orchidae Bat. & Peres, and Tricharia species. Ascocarp formation in the hosts is apparently often inhibited by the p
RMRDE56E–. The fungi which cause plant disease . Plant diseases; Fungi. 554 THE FUNGI WHICH CAUSE PLANT DISEASE Melanconium Link (p. 553) Acervuli subcutaneous, conic or discoid, blacli; conidia elongate to globose-oblong, erumpent in black masses; conidiophore sim- ple. In part=Trichosphaeria. See p. 228. More than one hundred fifty species. M. fuUgineum S. & V. Cav.«^ Acervuli scattered or gregarious, at first gray-cinereous, then brownish, subepidermal, erumpent; conidia ovoid to ellipsoid, inequilateral, acute, 9-12 x 4-6 n, olive, guttulate; conidiophores filiform, from a well developed stroma
RMRM6X0M–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 2o6 Bulletin 1^2. duced on wilted leaves in a wet season) ; while b and e show the same fun- gus under normal conditions. I have experienced no difficulty in germina- ting the fungus on plates of agar, and in securing pure cultures in tubes of sterile bean stems or of petioles of celery. In this condition the fruiting hy- phae are often ultimately more than a millimeter in length. At first conidia are reo-ularly produced, leaving the accustomed geniculat
![. The fungi which cause plant disease . Plant diseases; Fungi. 516 THE FUNGI WHICH CAUSE PLANT DISEASE H. oryzae Miy. on rice; H. notha Sacc. & Br. on Juniperus leaves; H. togniniana Poll, on Cycas. H. foliicola (Berk.) Fcl."' Pycnidia epiphyllous, bro^Tiish-black, subglobose, subelliptic or irregular; conidia elliptic to clavate, obtuse, 3 to 5-septate; conid- iophores filiform, radiating. On Juniperus and Pine. Cryptostictis Fuckel (p. 515) Pycnidia erumpent, globose or depressed, ostiolate; conidia elongate, 2 or more septate, subapically appendiculate with a long hyaline bristle. Stock Photo](https://c8.alamy.com/comp/RDE59J/the-fungi-which-cause-plant-disease-plant-diseases-fungi-516-the-fungi-which-cause-plant-disease-h-oryzae-miy-on-rice-h-notha-sacc-amp-br-on-juniperus-leaves-h-togniniana-poll-on-cycas-h-foliicola-berk-fclquot-pycnidia-epiphyllous-brotiish-black-subglobose-subelliptic-or-irregular-conidia-elliptic-to-clavate-obtuse-3-to-5-septate-conid-iophores-filiform-radiating-on-juniperus-and-pine-cryptostictis-fuckel-p-515-pycnidia-erumpent-globose-or-depressed-ostiolate-conidia-elongate-2-or-more-septate-subapically-appendiculate-with-a-long-hyaline-bristle-RDE59J.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 516 THE FUNGI WHICH CAUSE PLANT DISEASE H. oryzae Miy. on rice; H. notha Sacc. & Br. on Juniperus leaves; H. togniniana Poll, on Cycas. H. foliicola (Berk.) Fcl."' Pycnidia epiphyllous, bro^Tiish-black, subglobose, subelliptic or irregular; conidia elliptic to clavate, obtuse, 3 to 5-septate; conid- iophores filiform, radiating. On Juniperus and Pine. Cryptostictis Fuckel (p. 515) Pycnidia erumpent, globose or depressed, ostiolate; conidia elongate, 2 or more septate, subapically appendiculate with a long hyaline bristle. Stock Photo")
RMRDE59J–. The fungi which cause plant disease . Plant diseases; Fungi. 516 THE FUNGI WHICH CAUSE PLANT DISEASE H. oryzae Miy. on rice; H. notha Sacc. & Br. on Juniperus leaves; H. togniniana Poll, on Cycas. H. foliicola (Berk.) Fcl."' Pycnidia epiphyllous, bro^Tiish-black, subglobose, subelliptic or irregular; conidia elliptic to clavate, obtuse, 3 to 5-septate; conid- iophores filiform, radiating. On Juniperus and Pine. Cryptostictis Fuckel (p. 515) Pycnidia erumpent, globose or depressed, ostiolate; conidia elongate, 2 or more septate, subapically appendiculate with a long hyaline bristle.
RMRDYBWE–. The essentials of botany. Botany. Fio. 103. Fig. 103. Fig. 102.—^, a small slice of the spore-fruit of a truffle (Tuber melano- sporum), showing sacs and spores ; B, a sac audits spores, more enlarged. Fig. 103.—a filament of Blue Mould (Penicillium chartarum), bearing oonidia. At the side is shown an isolated chain of conidia. of the herbarium-mould, and the spore-fruit is a minute truffle-like body as large as a coarse sand-grain. Practical Studies.—(a) Truffles are natives of Europe, but they may be obtained for study in our markets. Make tbin cross-sections of tbe large spore-fruit, and
RMREF5J3–. Comparative morphology of Fungi. Fungi. 606 COMPARATIVE MORPHOLOGY OF FUNGI the spore which collapses (Woronin, 1881). In Neovossia, from 30 to 50 or more sporidia are formed (Fig. 401, 4 and 5); they never fuse but. Fig. 401.—Neovossia Moliniae. 1. Tuft of hyphae with filamentous conidia. 2. Fila- mentous conidia germinating to falcate conidia. 3. Young smut spores. 4, 5. Germina- tion of smut spores. (1, 2 X 270; 3 X 330; 4, 5 X 240; after Brefeld, 1895.) develop to very slender mycelia which, in case the germination occurs in water, pour out their content into falcate conidia or, if the g
RMRDE4WE–. The fungi which cause plant disease . Plant diseases; Fungi. FiQ. 432.—HyphtB of Tubercularia, bearing conidia. After Durand.. Fio. 433.—T. fici, sporodochium, showing i and conidial formation. After Edgerton. In slender, usually branched; conidia apical, ovate to elongate, part =Nectria. See p. 201. Over one hundred species, chiefly saprophytes. T. vulgaris Tode =Nectria cinnabarina. See p. 202. T. fici Edg.'^*' 361 Sporodochia scattered or gregarious, superficial or subcuticular, light pink, variable in size up to 3-4 x 1-1.5 mm., smooth, irregular in outline; conidiophores crowded, hyalin
![. Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 46. 5 10 15 20 WEEKS AFTER PLANTING Figure 9 - A. Relationship of population density of Triehoderma spp. (X- X), Aspergillus spp. (0 0), and Penicillium spp"! (9 <) "to time after planting in soils amended with three isolates of T. harzianum, one isolate of A. ochraceus, and one isolate of P. restrictum at 5 X 10-5 conidia per isolate per plant under field conditions.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a Stock Photo](https://c8.alamy.com/comp/RHG8HN/biological-control-of-fusarium-crown-rot-of-tomato-tomato-wilts-tomatoes-46-5-10-15-20-weeks-after-planting-figure-9-a-relationship-of-population-density-of-triehoderma-spp-x-x-aspergillus-spp-0-0-and-penicillium-sppquot!-9-lt-quotto-time-after-planting-in-soils-amended-with-three-isolates-of-t-harzianum-one-isolate-of-a-ochraceus-and-one-isolate-of-p-restrictum-at-5-x-10-5-conidia-per-isolate-per-plant-under-field-conditions-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-a-RHG8HN.jpg ". Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 46. 5 10 15 20 WEEKS AFTER PLANTING Figure 9 - A. Relationship of population density of Triehoderma spp. (X- X), Aspergillus spp. (0 0), and Penicillium spp"! (9 <) "to time after planting in soils amended with three isolates of T. harzianum, one isolate of A. ochraceus, and one isolate of P. restrictum at 5 X 10-5 conidia per isolate per plant under field conditions.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a Stock Photo")
RMRHG8HN–. Biological control of fusarium crown rot of tomato. Tomato wilts; Tomatoes. 46. 5 10 15 20 WEEKS AFTER PLANTING Figure 9 - A. Relationship of population density of Triehoderma spp. (X- X), Aspergillus spp. (0 0), and Penicillium spp"! (9 <) "to time after planting in soils amended with three isolates of T. harzianum, one isolate of A. ochraceus, and one isolate of P. restrictum at 5 X 10-5 conidia per isolate per plant under field conditions.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
RMRF3T64–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—Stromatal development and conidial production of Dothistroma septospora. A: Stromata developing under epidermis. B: Stromata appearing on the surface of the lesion by slitting epidermis. C: Stroma producing condidia (c). D: Stroma which has turned black and dried. E: Conidial masses (cm) produced on a stroma. F: Conidia. (Scales: A, B, C, D, E = 100 (im, F = 10 (im) As shown in table 1, conidia were first detected on stromat
RMRGKBHB–. Bulletin of the British Museum (Natural History) Botany. 274 D. L. HAWKSWORTH. lOum Fig. 44 Cylindrocarpon lichenicola (PAD—holotype). A, Conidiophore. B, Conidia. C, Chlamydospores. Fusarium sampaioi Gonz. Frag., Bolm Soc. broteriana II, 2 : 50 (1924). Type: Portugal, near Taboaco, on thalli of Physcia semipinnata (Gmelin) Moberg (syn. P. leptalea (Ach.)DC), December 1922, J. Macedo Pinto (MA 5878—syntype!). This taxon was described as having 0-3 septate conidia, 14-24x2-3-2 urn, which were curved and borne in fascicles. It was reported from two localities in the original description and fr
RMRFCBP5–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—Stromatal development and conidial production of Dothistroma septospora. A: Stromata developing under epidermis. B: Stromata appearing on the surface of the lesion by slitting epidermis. C: Stroma producing condidia (c). D: Stroma which has turned black and dried. E: Conidial masses (cm) produced on a stroma. F: Conidia. (Scales: A, B, C, D, E = 100 (im, F = 10 (im) As shown in table 1, conidia were first detected on stromat
![. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 83 On Betula pubescens it forms the well-known witches- brooms whose leaves have a greyish bloom on the whole of the under-side. Asci large 45-50 ,u 15-20,u, early Fil- led with conidia, the stalk- cell 15 ^'—25 ," long, pointed below as it is placed deep between the epidermis-cells. The conidia are oblong 5—7 ," long, generally with 1—2 va- cuoles. It has been identified by Saccardo (Syll. VIII "'") and Winter (II ") with T. turgida; even Rostrup has once expres- sed the same opinion (R 91 b =''''), Stock Photo](https://c8.alamy.com/comp/RE393W/danish-fungi-as-represented-in-the-herbarium-of-e-rostrup-fungi-83-on-betula-pubescens-it-forms-the-well-known-witches-brooms-whose-leaves-have-a-greyish-bloom-on-the-whole-of-the-under-side-asci-large-45-50-u-15-20u-early-fil-led-with-conidia-the-stalk-cell-15-25-quot-long-pointed-below-as-it-is-placed-deep-between-the-epidermis-cells-the-conidia-are-oblong-57-quot-long-generally-with-12-va-cuoles-it-has-been-identified-by-saccardo-syll-viii-quotquot-and-winter-ii-quot-with-t-turgida-even-rostrup-has-once-expres-sed-the-same-opinion-r-91-b-=-RE393W.jpg ". Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 83 On Betula pubescens it forms the well-known witches- brooms whose leaves have a greyish bloom on the whole of the under-side. Asci large 45-50 ,u 15-20,u, early Fil- led with conidia, the stalk- cell 15 ^'—25 ," long, pointed below as it is placed deep between the epidermis-cells. The conidia are oblong 5—7 ," long, generally with 1—2 va- cuoles. It has been identified by Saccardo (Syll. VIII "'") and Winter (II ") with T. turgida; even Rostrup has once expres- sed the same opinion (R 91 b =''''), Stock Photo")
RMRE393W–. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 83 On Betula pubescens it forms the well-known witches- brooms whose leaves have a greyish bloom on the whole of the under-side. Asci large 45-50 ,u 15-20,u, early Fil- led with conidia, the stalk- cell 15 ^'—25 ," long, pointed below as it is placed deep between the epidermis-cells. The conidia are oblong 5—7 ," long, generally with 1—2 va- cuoles. It has been identified by Saccardo (Syll. VIII "'") and Winter (II ") with T. turgida; even Rostrup has once expres- sed the same opinion (R 91 b =''''),
RMRFCBJR–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figures 9-15.—Twig blight of Japanese cedar. 9. Dead twigs (arrow) resulting from inoculation of wounds. 10. A canker formed on a branch following inoculation. 11. A cross section of an acervulus of the twig blight fungus. 12. Conidia produced in chains from conidiogenous cells in an acervulus. 13. A scan- ning electron micrograph of conidia and conidiogenous cells. 14. Conidia with two nuclei, stained with HCl-Giemsa. 15. A transmiss
RMRGKAD3–. Bulletin of the British Museum (Natural History). Botany; Botany. 218 H. KROG & T. D. V. SWINSCOW. Fig. 25 Parmelia taitae Krog & Swinscow, holotype (O). Rule = 1 cm. Type: Kenya, Coast Province, Taita District, Taita Hills, Mt Iyale, 3° 23' S, 38° 20' E, alt. 1980 m, epilithic on granitic rock, 9 December 1973, coll. /. Nordal no. INB 727 (O— holotype). Parmelia eborina Hale, described from Central America, has similar spores and conidia but lacks cilia, has subsessile apothecia, and produces protocetraric acid without the addition of fumarprotocetraric acid. It is possible that P.
RMRDE6DY–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 107.—Cenangium, habit sketch, asci and paraphyses. After Tulasne. Conidia (= Brunchorstia destuens Erikss.) in pyc- nidia which are partially embedded in the host, the smaller simple, the larger compound, 1-2 mm. in diam.; spores 30-40 x 3 n, tapering-rounded at each end, 2 to 5-septate. A second conidial phase (=Dothichiza ferruginosa Sacc.) has simple spores. C. vitesia occurs in conidial form as Fuckelia on Ribes. In many Dermatea Fries (p. 151) A genus of over sixty species some of them parasitic species conidia in pycnidi
RMRGWD3F–. Bulletin. Natural history; Natural history. Aug., 1971 Pehhy: Two Components of Poinsettia Root Rot 427. Fig. 1, — Thiehviopiii basicolo: A, 10-day-old colony on V-8 juice agar; B, colony components — two kinds of spores and two types of mycelia (X 130); C, chlomydospore cfioins (X 520); and D, endoconidiopfiores with endoconidio (X 520). were produced individually or in arise from a common point but from clusters on terminal tips of hyphae or various subbasal, hyphal cells, on stubby lateral branches. Endoco- Conidia were produced endogenously nidiophores produced in clusters were by the ph
RMRD6T5B–. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. Fig. 9.—Penicillium duclauxi Delacroix: a, b, conidial fructifications with young conidia smooth, from potato-agar plate culture, simpler types (X 900); c, d, e, conidial fructifications from potato-agar plate culture, more complex types (X 1,400); /, g, h,j, sketches of habit upon potato agar, showing the very short conidiophores arising from the substratum (X 140); k, ripe spores highly magnified to show delicate markings (X 900, apochromatic); J, m, n, germination of
RMRGJH26–. Bulletin of the British Museum (Natural History). Botany; Botany. lOjLLm Fig. 33A-B, Vouauxiomyces ramalinae (IMI 194098); A, conidiogenous cells; B, conidia. C-D, V. santessonii (UPS—holotype); C, conidiogenous cells; D, conidia. E, V. truncatus (Savoie, Santesson, UPS), conidia. Conidiomata pycnidial, immersed at first but becoming erumpent, to about half exposed at maturity, arising singly, scattered or sometimes in a ring in young infections, black, ostiolate, 55—75 //m diam; pycnidial wall mainly 3-5 cells thick, thickest in the exposed part adjacent to the ostiole, 5-12/im thick, dark
![. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 351.—Actinonema rosae. 3, branching strand of superficial mycelium; 4, spores. After Southworth. A. manihotes Hen. on cassava in Africa. A. tremulae Sacc. occurs on aspen; A. melutispora B. & Br. on ash. Actinonema Fries (p. 505) Pyenidia very small, not ostiolate, with a radiating mycelial growth on the surface of the host; conidia elongate, on short conidiophores. A genus of about fifteen species, chiefly leaf parasites. A. rosse (Lib.) Fr.^'*- "« Spots rounded or irregular, black or purple, epiphyllous, often. Plea Stock Photo](https://c8.alamy.com/comp/RDE5AP/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fig-351actinonema-rosae-3-branching-strand-of-superficial-mycelium-4-spores-after-southworth-a-manihotes-hen-on-cassava-in-africa-a-tremulae-sacc-occurs-on-aspen-a-melutispora-b-amp-br-on-ash-actinonema-fries-p-505-pyenidia-very-small-not-ostiolate-with-a-radiating-mycelial-growth-on-the-surface-of-the-host-conidia-elongate-on-short-conidiophores-a-genus-of-about-fifteen-species-chiefly-leaf-parasites-a-rosse-lib-fr-quot-spots-rounded-or-irregular-black-or-purple-epiphyllous-often-plea-RDE5AP.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fig. 351.—Actinonema rosae. 3, branching strand of superficial mycelium; 4, spores. After Southworth. A. manihotes Hen. on cassava in Africa. A. tremulae Sacc. occurs on aspen; A. melutispora B. & Br. on ash. Actinonema Fries (p. 505) Pyenidia very small, not ostiolate, with a radiating mycelial growth on the surface of the host; conidia elongate, on short conidiophores. A genus of about fifteen species, chiefly leaf parasites. A. rosse (Lib.) Fr.^'*- "« Spots rounded or irregular, black or purple, epiphyllous, often. Plea Stock Photo")
RMRDE5AP–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 351.—Actinonema rosae. 3, branching strand of superficial mycelium; 4, spores. After Southworth. A. manihotes Hen. on cassava in Africa. A. tremulae Sacc. occurs on aspen; A. melutispora B. & Br. on ash. Actinonema Fries (p. 505) Pyenidia very small, not ostiolate, with a radiating mycelial growth on the surface of the host; conidia elongate, on short conidiophores. A genus of about fifteen species, chiefly leaf parasites. A. rosse (Lib.) Fr.^'*- "« Spots rounded or irregular, black or purple, epiphyllous, often. Plea
RMRH3420–. British fungi (hymenomycetes). Basidiomycetes; Fungi -- Great Britain. EXIDIA. 313 15. T. foliicola Fckl.—White above, brown below, scattered, Tremeiia. crowded, somewhat sessile, granular, globose, gelatinous above, hard and dry below, when dry cup-shaped. Conidia on the apices of branched sterigmata, fusiform curved, simple, hyaline, 6x2 mk. On the lower surface of leaves of Rubus fruticosus with Phrag- midium. Castle Rising, 1882. March. Name—folium, a leaf; colo, to inhabit. Fckl. Symb.Myc.p. 402. Grevil- lea, vol. xiii. p. 50. Sacc. Fung. Ital. n. 1024. 16. T. torta Berk.— Yellow or ora
RMRDDYEB–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. GRAMINEOUS CROPS. 97 was first described by the late Rev. M. J. Berkeley, F.R.S., in the Journal Linnean Society (vol. xiii. p. 176). This fungus occurs chiefly in the South and South-west of England, and appears only to attack certain grasses growing on calcareous and siliceous soUs. The reason for. -A Fig. 38.—ISAEIA PUCIFOKMIS OF GeASSES A. A grass infested with the fungus (a). B. End of a fongus tuft (a) with conidia (spores). C. Conidia. x 670 diam. (Zeiss' E., 4oc.) the g
RMRDET77–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 712 ADDITIONAL EXERCISES I. Key of Species Grown on Agar and Gelatin Media A. Species fruiting typically by coremia (vertical and definite). u. Coremia long (3 to 15 mm.). 1. Conidial masses strictly terminal, olive-green, fragrant. P. claviforme (Fig. 249). 2. Upper third of coremia fertile, conidia green. P. Duclauxii (Fig. 250). aa. Coremia small.. Fig. 252.—PeniciUium roseum. a, b, c. Branching of conidial fructification, showing few cells of each verticil; d, e, conidiiferous cell
RMRDE6X9–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 52.—Oospores of Albugo panduranae. 4. A. lepigoni. platensis. 9. A. occidentalis. 1. A. Candida. 2. A. tropica. 5. A. swertia;. 6. A. tragopogonis. 10. A. portulacae. After Wilson 3. A. ipomcesD- 7. A. bliti. 8. A. The conidia in germination usually produce several ovate zoospores with two unequal, lateral cilia. After a brief period of motility they became walled and produced germ tubes capable of mfectmg susceptible hosts. The oospores after a period of rest. Please note that these images are extracted from scanned page imag
RMRF3T53–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—Dse?:cs:rJ. A. Cordddorriua of die fungus or. an Ausrim pine needle. B. Coniddorraia or. a Jeffrey pine needle. C. Aeervulus with conidia. D. Conidia. E. Ascostromata of fungus on an Austrian pine needle. F. Verrleil section of ascostromata. G. An ascostroma with wo locules rapturing the host epidermis. FL Ascospor^s. Thyr and Shaw (17), on the basis of conidial length, described rwo variedes c: die fences. D. r:v.: var. .
![. The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse Stock Photo](https://c8.alamy.com/comp/RDE4TH/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fia-439fusarium-on-corn-after-burrill-and-bar-rett-fig-440f-vasinfectum-a-macro-conidia-b-portion-of-a-hypha-c-a-germinating-macroconidium-after-reed-moniliform-6-10-n-long-macroconidia-falcate-acute-usually-3-septate-25-40-ix-long-it-causes-molding-of-com-several-other-undetermined-species-have-been-isolated-from-com-on-which-they-occur-as-the-cause-of-dry-rot-of-the-grainquotquot-a-fusarium-on-banana-is-by-essed-referred-to-ustilaginoidella-see-p-214-f-vasinfectum-atkquotquot-hyphse-RDE4TH.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse Stock Photo")
RMRDE4TH–. The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse
![. Bulletin of the British Museum (Natural History). Botany; Botany. i -. *JL <Si: ":. rF*s Fig. 30 Pyrenotrichum splitgerberi (A-B, D-F, IMI 44258/; C, IMI 246129). A-B, Dark conidiomata (x 16). C, Light conMiomata (x25). D, Vertical section of conidoma showing portion with conidiogenous cells (left) and papillae not bearing conidia (centre to right) (x 1020). E, Vertical section of conidioma (x 250). F, Vertical section of lower part of conidioma showing the branched conidiophores (x 1020).. Please note that these images are extracted from scanned page images that may have been digit Stock Photo](https://c8.alamy.com/comp/RGJH4G/bulletin-of-the-british-museum-natural-history-botany-botany-i-jl-ltsi-quot-rfs-fig-30-pyrenotrichum-splitgerberi-a-b-d-f-imi-44258-c-imi-246129-a-b-dark-conidiomata-x-16-c-light-conmiomata-x25-d-vertical-section-of-conidoma-showing-portion-with-conidiogenous-cells-left-and-papillae-not-bearing-conidia-centre-to-right-x-1020-e-vertical-section-of-conidioma-x-250-f-vertical-section-of-lower-part-of-conidioma-showing-the-branched-conidiophores-x-1020-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digit-RGJH4G.jpg ". Bulletin of the British Museum (Natural History). Botany; Botany. i -. *JL <Si: ":. rF*s Fig. 30 Pyrenotrichum splitgerberi (A-B, D-F, IMI 44258/; C, IMI 246129). A-B, Dark conidiomata (x 16). C, Light conMiomata (x25). D, Vertical section of conidoma showing portion with conidiogenous cells (left) and papillae not bearing conidia (centre to right) (x 1020). E, Vertical section of conidioma (x 250). F, Vertical section of lower part of conidioma showing the branched conidiophores (x 1020).. Please note that these images are extracted from scanned page images that may have been digit Stock Photo")
RMRGJH4G–. Bulletin of the British Museum (Natural History). Botany; Botany. i -. *JL <Si: ":. rF*s Fig. 30 Pyrenotrichum splitgerberi (A-B, D-F, IMI 44258/; C, IMI 246129). A-B, Dark conidiomata (x 16). C, Light conMiomata (x25). D, Vertical section of conidoma showing portion with conidiogenous cells (left) and papillae not bearing conidia (centre to right) (x 1020). E, Vertical section of conidioma (x 250). F, Vertical section of lower part of conidioma showing the branched conidiophores (x 1020).. Please note that these images are extracted from scanned page images that may have been digit
RMRH93AG–. Bothalia. Botany. 77 pvriform, 6-7 (x high X 3*5 (x. Thyriothecia rather numerous, scattered, flattened hemi- spherical, 120-140 |x diameter, formed of radiating hyphae about 3 [X diameter, margin not fimbriate, dehiscing by a stellate fissure, no basal membrance. Asci aparaphysate, eight-spored, subspherical or ovate, sessile, 36-40 X 23-33 [x. Spores conglobate, two- celled, brown, slightly constricted, cells subequal, epispore rough at maturity, 17-20 / 10 (A. Pycnidia similar in form to thyriothecia, but somewhat smaller, about 100 [x diameter ; conidia ovate, brown, continuous, without
RMRD6RWG–. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. PENICILLIUM NO. 28. 77 X? i I Ml I! l. LATA. Color deep 'lull green; reverse cream, or Blight traces of pink or violet; color in media, none. ((dor, aone. Fifteen per cen! gelatin in water, .-low but typical; liquefaction, rather slow and variable; litmus reaction, acid. Potato and beau agar and potato plugs, typical, producing a very heavy layer of dark-green conidia when cane Bugar is added. Etau- 1 in's fluid, typical. Cohn's solution, germination only. Synthetic fl
RMREERH7–. Comparative morphology of Fungi. Fungi. Fig. 173.—Ascotricha chartarum. 1. Perithecium with setae about the ostiole. 2. Conidiophore of Dicyma form. 3. Branch of conidiophore. 4. Conidiophore of Sporotri- chum form. (1 X 105; 2 X 60; 3, 4 X 980; after Boulanger, 1897.) disappears above in a broom-like, lighter-colored and finally hyaline fertile part (Lindfors, 1920). In Ascotricha chartarum (C. Zopfii) on the rind of Piscidia erythrina (Boulanger, 1897), two imperfect forms have been discovered, one a Sporotrichum type with smooth, hyaline conidia (Fig. 173, 4) and a Dicyma type with echinu
RMRDE6E4–. The fungi which cause plant disease . Plant diseases; Fungi. 152 THE FUNGI WHICH CAUSE PLANT DISEASE. Fig. 107.—Cenangium, habit sketch, asci and paraphyses. After Tulasne. Conidia (= Brunchorstia destuens Erikss.) in pyc- nidia which are partially embedded in the host, the smaller simple, the larger compound, 1-2 mm. in diam.; spores 30-40 x 3 n, tapering-rounded at each end, 2 to 5-septate. A second conidial phase (=Dothichiza ferruginosa Sacc.) has simple spores. C. vitesia occurs in conidial form as Fuckelia on Ribes. In many Dermatea Fries (p. 151) A genus of over sixty species some of
RMRDDAXK–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 269 crowded, simple, hyaline; conidia oblong to elliptic, straight or curved, basally pointed, 10-20 x 5-7 fi. This was first described in conidial form as a Glceosporium by ' Atkinson ^^ on privet as cause of cankers. The fungus was isolated and grown in pure culture. Later perithecia were obtained in the pure cultures.^*'' G. piperata (E. & E.) S. & S. Perithecia cespitose, thinly membranous, dark-brown, pyriform, hairy; asci ciavate; spores slightly curved, elliptic, 12-18 x 4-6 n.. Fi
![. The fungi which cause plant disease . Plant diseases; Fungi. 508 THE FUNGI WHICH CAUSE PLANT DISEASE 4.5 II. According to Stewart, French & Wilson, spots are caused on alfalfa.^' The American form is distinct from the European and has been described under the name A. imperfecta Pk.^^' A. lycopersici Brum. Spots red or brown, large, rounded or irregular; pyenidia sparse, minute, black; conidia oblong, constructed, 8-10 x 2.5 m- Spots are produced on leaves and fruits of egg plant. A. caulicola Lau. causes injury to Melilotus alba.^'" A. cookei Alas, is reported on Sweet William. A. c Stock Photo](https://c8.alamy.com/comp/RDE5B1/the-fungi-which-cause-plant-disease-plant-diseases-fungi-508-the-fungi-which-cause-plant-disease-45-ii-according-to-stewart-french-amp-wilson-spots-are-caused-on-alfalfa-the-american-form-is-distinct-from-the-european-and-has-been-described-under-the-name-a-imperfecta-pk-a-lycopersici-brum-spots-red-or-brown-large-rounded-or-irregular-pyenidia-sparse-minute-black-conidia-oblong-constructed-8-10-x-25-m-spots-are-produced-on-leaves-and-fruits-of-egg-plant-a-caulicola-lau-causes-injury-to-melilotus-albaquot-a-cookei-alas-is-reported-on-sweet-william-a-c-RDE5B1.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 508 THE FUNGI WHICH CAUSE PLANT DISEASE 4.5 II. According to Stewart, French & Wilson, spots are caused on alfalfa.^' The American form is distinct from the European and has been described under the name A. imperfecta Pk.^^' A. lycopersici Brum. Spots red or brown, large, rounded or irregular; pyenidia sparse, minute, black; conidia oblong, constructed, 8-10 x 2.5 m- Spots are produced on leaves and fruits of egg plant. A. caulicola Lau. causes injury to Melilotus alba.^'" A. cookei Alas, is reported on Sweet William. A. c Stock Photo")
RMRDE5B1–. The fungi which cause plant disease . Plant diseases; Fungi. 508 THE FUNGI WHICH CAUSE PLANT DISEASE 4.5 II. According to Stewart, French & Wilson, spots are caused on alfalfa.^' The American form is distinct from the European and has been described under the name A. imperfecta Pk.^^' A. lycopersici Brum. Spots red or brown, large, rounded or irregular; pyenidia sparse, minute, black; conidia oblong, constructed, 8-10 x 2.5 m- Spots are produced on leaves and fruits of egg plant. A. caulicola Lau. causes injury to Melilotus alba.^'" A. cookei Alas, is reported on Sweet William. A. c
![. The fungi which cause plant disease . Plant diseases; Fungi. (see p. 46) of potatoes; it is perhaps identical with F. sporum. F. erubescens A. & v. Ov. produces small black sunken spots on green and ripe toma- toes in Germany *'"' re- sulting finally in mummi- fication. Parasitism by means of enzymes was demonstrated. F. lycopersici Sacc.^"'"^"- Sporodochia as in F. oxy- sporum; conidia falcate, acute, 25-30 x 3.5-4 fi, .^^SS^S^SZSS^KSU H-i hyaline to yellowish. It is the cause of a to- mato wilt or "sleeping disease" resulting from in- ^'°- ^*^-^- "'^- Stock Photo](https://c8.alamy.com/comp/RDE4T1/the-fungi-which-cause-plant-disease-plant-diseases-fungi-see-p-46-of-potatoes-it-is-perhaps-identical-with-f-sporum-f-erubescens-a-amp-v-ov-produces-small-black-sunken-spots-on-green-and-ripe-toma-toes-in-germany-quot-re-sulting-finally-in-mummi-fication-parasitism-by-means-of-enzymes-was-demonstrated-f-lycopersici-saccquotquotquot-sporodochia-as-in-f-oxy-sporum-conidia-falcate-acute-25-30-x-35-4-fi-sssszssksu-h-i-hyaline-to-yellowish-it-is-the-cause-of-a-to-mato-wilt-or-quotsleeping-diseasequot-resulting-from-in-quot-RDE4T1.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. (see p. 46) of potatoes; it is perhaps identical with F. sporum. F. erubescens A. & v. Ov. produces small black sunken spots on green and ripe toma- toes in Germany *'"' re- sulting finally in mummi- fication. Parasitism by means of enzymes was demonstrated. F. lycopersici Sacc.^"'"^"- Sporodochia as in F. oxy- sporum; conidia falcate, acute, 25-30 x 3.5-4 fi, .^^SS^S^SZSS^KSU H-i hyaline to yellowish. It is the cause of a to- mato wilt or "sleeping disease" resulting from in- ^'°- ^*^-^- "'^- Stock Photo")
RMRDE4T1–. The fungi which cause plant disease . Plant diseases; Fungi. (see p. 46) of potatoes; it is perhaps identical with F. sporum. F. erubescens A. & v. Ov. produces small black sunken spots on green and ripe toma- toes in Germany *'"' re- sulting finally in mummi- fication. Parasitism by means of enzymes was demonstrated. F. lycopersici Sacc.^"'"^"- Sporodochia as in F. oxy- sporum; conidia falcate, acute, 25-30 x 3.5-4 fi, .^^SS^S^SZSS^KSU H-i hyaline to yellowish. It is the cause of a to- mato wilt or "sleeping disease" resulting from in- ^'°- ^*^-^- "'^-
RMRDE4RK–. The fungi which cause plant disease . Plant diseases; Fungi. 658 THE FUNGI WHICH CAUSE PLANT DISEASE Exposorium Link (p. 657) Sporodochia convex, compact; conidiophores dark, simple, densely compacted; conidia single, oblong to cylindric, pliu:isep- tate. Some twenty-five species. In part=Coleroa and Coryneum. See pp. 227, 236. E. juniperinum (E.) Jacz. = Coryneum juniperinum. See p. 236. E. laricinum Mas. is fomid on living larch twigs. E. tiliae Lk. grows on young shoots of Tilia. E. palmivorum Sacc.*''. Fig. 446.—E. palmivorum. 3, a sporodochium, 5, spores. After Trelease. Spots amphigeno
![. Bulletin. Natural history; Natural history. Aug., 1974 Born: Root Infection with V. albo-atrum 223. Fig. 8.—Longitudinal section showing lodged conidia at the end walls of the vessel member of a redbud root (X 2300). Table 4.—A comparison of penetration and development of Verticillium albo-atrum in roots of herbaceous and woody hosts. Intensity of Colonization in Susceptible (S) and Resistant (R) Plants' Hops'' Cotton*' Woody Ornamentals" S R S R S S R R Region of Infection and Signs of Disease Fruggle OR/55 Daltapine 15 Acata Green Redbud Ash Honey Locust Sycamore Epidermis Root hairs Stock Photo](https://c8.alamy.com/comp/RGW2CW/bulletin-natural-history-natural-history-aug-1974-born-root-infection-with-v-albo-atrum-223-fig-8longitudinal-section-showing-lodged-conidia-at-the-end-walls-of-the-vessel-member-of-a-redbud-root-x-2300-table-4a-comparison-of-penetration-and-development-of-verticillium-albo-atrum-in-roots-of-herbaceous-and-woody-hosts-intensity-of-colonization-in-susceptible-s-and-resistant-r-plants-hops-cotton-woody-ornamentalsquot-s-r-s-r-s-s-r-r-region-of-infection-and-signs-of-disease-fruggle-or55-daltapine-15-acata-green-redbud-ash-honey-locust-sycamore-epidermis-root-hairs-RGW2CW.jpg ". Bulletin. Natural history; Natural history. Aug., 1974 Born: Root Infection with V. albo-atrum 223. Fig. 8.—Longitudinal section showing lodged conidia at the end walls of the vessel member of a redbud root (X 2300). Table 4.—A comparison of penetration and development of Verticillium albo-atrum in roots of herbaceous and woody hosts. Intensity of Colonization in Susceptible (S) and Resistant (R) Plants' Hops'' Cotton*' Woody Ornamentals" S R S R S S R R Region of Infection and Signs of Disease Fruggle OR/55 Daltapine 15 Acata Green Redbud Ash Honey Locust Sycamore Epidermis Root hairs Stock Photo")
RMRGW2CW–. Bulletin. Natural history; Natural history. Aug., 1974 Born: Root Infection with V. albo-atrum 223. Fig. 8.—Longitudinal section showing lodged conidia at the end walls of the vessel member of a redbud root (X 2300). Table 4.—A comparison of penetration and development of Verticillium albo-atrum in roots of herbaceous and woody hosts. Intensity of Colonization in Susceptible (S) and Resistant (R) Plants' Hops'' Cotton*' Woody Ornamentals" S R S R S S R R Region of Infection and Signs of Disease Fruggle OR/55 Daltapine 15 Acata Green Redbud Ash Honey Locust Sycamore Epidermis Root hairs
RMRDE4YN–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 613 conidia acrogenous, straight, cylindrical, ends rounded, 4 to 5- septate, not constricted, dark olive-brown, 100-115 x 14- 18 /*. On oats and barley. H. avense Ei. Similar to H. teres, but the conidiophores scattered, 150-200 x 9-12 n, septate, brown; conidia cylindric, brownish, 4 to 6-septate, 80-100 X 15-16 n. On oats. The conidia of the two last species infect grains and seedlings. The conidia spread the disease from the early infection centers to other parts of the plants but the myceliu
RMRF3T2J–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figures 9-15.—Twig blight of Japanese cedar. 9. Dead twigs (arrow) resulting from inoculation of wounds. 10. A canker formed on a branch following inoculation. 11. A cross section of an acervulus of the twig blight fungus. 12. Conidia produced in chains from conidiogenous cells in an acervulus. 13. A scan- ning electron micrograph of conidia and conidiogenous cells. 14. Conidia with two nuclei, stained with HCl-Giemsa. 15. A transmiss
RMRDDBPP–. The fungi which cause plant disease . Plant diseases; Fungi. 188 THE FUNGI WHICH CAUSE PLANT DISEASE or more or less persistent; perithecia usually scattered, rarely gregarious, 140-270 /t, rarely up to 350 n; cells rather obscure, 15-20 fi; the apical outgrowth becomes mucilaginous attaching the perithecium firmly to places where it may fall; appendages. Fig. 137.—Phyllactinia corylea. 1. Natural size, on chestnut leaf. 2. Perithecium enlarged. 3. Two asci. 4. Three spores. 5. Conidia-bearing hyphae. 6. Co- nidium germinating. After Anderson. 5-18, equatorial, 1 to 3-times the diameter of t
RMRDBFAR–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. I—I—I—I—I—' Fig. 62. Pansy Diseases. a to f. Colletrotrichum viola-tricoloris R. E. Smith, a. affect«d leaf- let, h. several confluent acervuli with mycelium, setx, and conidia, c. single acervulus, more enlarged, d. basidia and production of conidia, e. conidia, f. affected blossoms, g to i. Fusariwn violtr. Wolf, g. forma- tion of microconidia, h. germination of macroconidia, i. macroconidia (o-/ after Smith, R. E.; g to » after Wolf, F. A.).. Please note that these images are extracted from scanne
RMRGW174–. Bulletin. Natural history; Natural history. 312 Illinois Natural History Survey Bulletin Vol. 26, Art. 3 turcs until April, 1^53, when a sharp rise occurred with a rise in monthly mean tem- perature. After April, the number of conidia decreased again, as the monthly mean temperatures increased, and no conidia were found on mats that were sampled in July. It is interesting to note in fig. 19 that the peak in conidium con- centration in December and a rise in April were preceded by months in which precipitation was above the annual mean. The time of the highest average per 14 r ^1 CONIOIA I I
RMRDE6HG–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 92.-|-Sclerotinia on plum, o, section showing a spore pustule and chains of conidia; 6, part of a spore-chain; c, spores germinating; d, a mummy plum and ascophores; e, an ascophore; /, ascus; g, mature spores. After Longyear. in nature, usually at blossom time of the host, can also produce apothecia, a fact first demonstrated by Norton. ^^ These apothecia develop in large numbers from old fruits half buried in soil, and send forth ascospores to aid in infection. The ascospores germinate readily in water and it was proved by N
RMRGJHNJ–. Bulletin of the British Museum (Natural History). Botany; Botany. LICHENICOLOUS COELOMYCETES 21. Fig. 8 Epicladonia simplex (H- â holotype). A, Vertical section of pycnidial wall. B, Conidiogenous cells. C, Conidia. strongly tapered towards the apex, hyaline, smooth-walled, no annellations seen, mainly 7-12 x 3-3-5 jum. Conidia arising singly, not catenate, subcylindrical to almost cymbiform, often rather irregular in shape, the apex rounded to slightly attenuated and the base narrowed and abruptly truncated by a scar c. 1-1*5 jum wide, simple or exceptionally 1 -septate, frequently 2 or mor
RMRFCBMJ–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—Dse?:cs:rJ. A. Cordddorriua of die fungus or. an Ausrim pine needle. B. Coniddorraia or. a Jeffrey pine needle. C. Aeervulus with conidia. D. Conidia. E. Ascostromata of fungus on an Austrian pine needle. F. Verrleil section of ascostromata. G. An ascostroma with wo locules rapturing the host epidermis. FL Ascospor^s. Thyr and Shaw (17), on the basis of conidial length, described rwo variedes c: die fences. D. r:v.: var. .
![. Plant studies; an elementary botany. Botany. 376 I'LANT .STUDIES large one, and contains a great variety of forms. All of them, however, produce sjiores in asci, but the asci arc not always inclosed by an a8C0(;arp. Here belong the common blue mould {l')ii(illiiim.) found on bread, fruit, etc., in which stage the branching chains of conidia are very con- spicuous (Fig. 243) ; the truffle-fungi, upon whose subter-. 1. showing' tiraiiu i-M,nean mycelia a.scoca,rps dcvt'li)}) wliirli a,rc known as "truffles"; tlic l)liicl fungi, wliicli form the diseases kiKiwii as " bla(/k kno Stock Photo](https://c8.alamy.com/comp/RDHGAK/plant-studies-an-elementary-botany-botany-376-ilant-studies-large-one-and-contains-a-great-variety-of-forms-all-of-them-however-produce-sjiores-in-asci-but-the-asci-arc-not-always-inclosed-by-an-a8c0arp-here-belong-the-common-blue-mould-liiilliiim-found-on-bread-fruit-etc-in-which-stage-the-branching-chains-of-conidia-are-very-con-spicuous-fig-243-the-truffle-fungi-upon-whose-subter-1-showing-tiraiiu-i-mnean-mycelia-ascocarps-dcvtli-wliirli-arc-known-as-quottrufflesquot-tlic-lliicl-fungi-wliicli-form-the-diseases-kikiwii-as-quot-blak-kno-RDHGAK.jpg ". Plant studies; an elementary botany. Botany. 376 I'LANT .STUDIES large one, and contains a great variety of forms. All of them, however, produce sjiores in asci, but the asci arc not always inclosed by an a8C0(;arp. Here belong the common blue mould {l')ii(illiiim.) found on bread, fruit, etc., in which stage the branching chains of conidia are very con- spicuous (Fig. 243) ; the truffle-fungi, upon whose subter-. 1. showing' tiraiiu i-M,nean mycelia a.scoca,rps dcvt'li)}) wliirli a,rc known as "truffles"; tlic l)liicl fungi, wliicli form the diseases kiKiwii as " bla(/k kno Stock Photo")
RMRDHGAK–. Plant studies; an elementary botany. Botany. 376 I'LANT .STUDIES large one, and contains a great variety of forms. All of them, however, produce sjiores in asci, but the asci arc not always inclosed by an a8C0(;arp. Here belong the common blue mould {l')ii(illiiim.) found on bread, fruit, etc., in which stage the branching chains of conidia are very con- spicuous (Fig. 243) ; the truffle-fungi, upon whose subter-. 1. showing' tiraiiu i-M,nean mycelia a.scoca,rps dcvt'li)}) wliirli a,rc known as "truffles"; tlic l)liicl fungi, wliicli form the diseases kiKiwii as " bla(/k kno
RMRDE6D7–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 159. spreading the fungus during the summer though they have not yet actually been observed to germinate or to cause infection. Apothecia radiately arranged on the stroma which is about 0.5-1.5 cm. across; asci 120-130 X 9-10 ix; spores large, 65-80 Tt 1.5-3 m; paraphyses numerous, in- curved or hooked. Conidia (=Melasmia acerina Lev.) preceding the asci, producing numerous small, hyaline, 1-celled spores in an extended hy- menial layer. On various species of Fig. maple, apparently consist- ing o
RMRGWD7C–. Bulletin. Natural history; Natural history. Jur 1941 CARTER: OAK DISEASES IN ILLINOIS 213 black, globoid to slightly ovoid, ostiolate, and 150-200 ji in diameter. The conidia are hyaline, ,?-,?.5 X 1-2.5 ju, oblong to fiisoid, and continuous. From one of the two twig cankers, Plioma was obtained in culture; Cephalo- sporium was obtained from the other. Dothiorella was obtained from the trunk canker and from one branch canker; Peni- cilliuni and Cephalosporiuin were obtained from the other branch canker. The Phomii from the twig canker, cultured on corn meal agar, produced black, globose pyc-
![. The fungi which cause plant disease . Plant diseases; Fungi. 502 THE FUNGI WHICH CAUSE PLANT DISEASE About two hundred species several of them important plant pathogens. S. malorum Pk.«°' "â ""'^ Mycelium sooty-brown; pycnidia erumpent, usually surrounded by broken epidermis, apically somewhat depressed; conidia oblong elliptic, broAvn, usually about twice as long as broad, 22-32 x 10-14 H, varying in size with host and part attacked. On apple, pear, quince, hawthorn; on twigs causing canker or blight; on fruit causing rot and on leaves causing spots.. iiu. 34S.âS. malorum, Stock Photo](https://c8.alamy.com/comp/RDE5BA/the-fungi-which-cause-plant-disease-plant-diseases-fungi-502-the-fungi-which-cause-plant-disease-about-two-hundred-species-several-of-them-important-plant-pathogens-s-malorum-pk-quot-quotquot-mycelium-sooty-brown-pycnidia-erumpent-usually-surrounded-by-broken-epidermis-apically-somewhat-depressed-conidia-oblong-elliptic-broavn-usually-about-twice-as-long-as-broad-22-32-x-10-14-h-varying-in-size-with-host-and-part-attacked-on-apple-pear-quince-hawthorn-on-twigs-causing-canker-or-blight-on-fruit-causing-rot-and-on-leaves-causing-spots-iiu-34ss-malorum-RDE5BA.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 502 THE FUNGI WHICH CAUSE PLANT DISEASE About two hundred species several of them important plant pathogens. S. malorum Pk.«°' "â ""'^ Mycelium sooty-brown; pycnidia erumpent, usually surrounded by broken epidermis, apically somewhat depressed; conidia oblong elliptic, broAvn, usually about twice as long as broad, 22-32 x 10-14 H, varying in size with host and part attacked. On apple, pear, quince, hawthorn; on twigs causing canker or blight; on fruit causing rot and on leaves causing spots.. iiu. 34S.âS. malorum, Stock Photo")
RMRDE5BA–. The fungi which cause plant disease . Plant diseases; Fungi. 502 THE FUNGI WHICH CAUSE PLANT DISEASE About two hundred species several of them important plant pathogens. S. malorum Pk.«°' "â ""'^ Mycelium sooty-brown; pycnidia erumpent, usually surrounded by broken epidermis, apically somewhat depressed; conidia oblong elliptic, broAvn, usually about twice as long as broad, 22-32 x 10-14 H, varying in size with host and part attacked. On apple, pear, quince, hawthorn; on twigs causing canker or blight; on fruit causing rot and on leaves causing spots.. iiu. 34S.âS. malorum,
RMRH33YB–. British fungi (hymenomycetes). Basidiomycetes; Fungi -- Great Britain. C. Guepinia helvelloides. One- half natural size. , a fungus). Dacrymyces. GENUS LXIII. — Dacrymyces (SOK/W, a tear; Nees Syst. p. 89. Gelatinous, homogeneous, pervaded internally with septate fibres; conidia linked together like a necklace ; sporophores clavate at the end of the filaments, bifurcate when mature ; spores septate. Tul. Ann. Sc. Nat. 1853, /. n. f. 19. /. 1 2. Fr. Hym. Eur. p. 697. * Red. ** Yellowish. *** Pa Hid o r fusco us. * Red. 1. D. macrosporus B. £ Br. — Rose-colour, gelatinous, tubcrculated. Formin
![. The fungi which cause plant disease . Plant diseases; Fungi. 322 THE FUNGI WHICH CAUSE PLANT DISEASE E. australe Speg. Son foliar, forming spots, yellowish to eventually dark, usually 0.5-6 mm. in length; spores light to reddish-yellow, ovoid to spherical or slightly angled, chiefly 10-16 n in length; conidia Unear, somewhat curved, usually 30-55 x 1-2 ii. Common and destructive on many species of Physalis and on Solanum, especially on some of the cultivated forms throughout the Americas and in Africa. E. fuscum Schr."^ Sori in.leaves, about 2-6 mm. or by confluence much larger, spores Stock Photo](https://c8.alamy.com/comp/RDE66C/the-fungi-which-cause-plant-disease-plant-diseases-fungi-322-the-fungi-which-cause-plant-disease-e-australe-speg-son-foliar-forming-spots-yellowish-to-eventually-dark-usually-05-6-mm-in-length-spores-light-to-reddish-yellow-ovoid-to-spherical-or-slightly-angled-chiefly-10-16-n-in-length-conidia-unear-somewhat-curved-usually-30-55-x-1-2-ii-common-and-destructive-on-many-species-of-physalis-and-on-solanum-especially-on-some-of-the-cultivated-forms-throughout-the-americas-and-in-africa-e-fuscum-schrquot-sori-inleaves-about-2-6-mm-or-by-confluence-much-larger-spores-RDE66C.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 322 THE FUNGI WHICH CAUSE PLANT DISEASE E. australe Speg. Son foliar, forming spots, yellowish to eventually dark, usually 0.5-6 mm. in length; spores light to reddish-yellow, ovoid to spherical or slightly angled, chiefly 10-16 n in length; conidia Unear, somewhat curved, usually 30-55 x 1-2 ii. Common and destructive on many species of Physalis and on Solanum, especially on some of the cultivated forms throughout the Americas and in Africa. E. fuscum Schr."^ Sori in.leaves, about 2-6 mm. or by confluence much larger, spores Stock Photo")
RMRDE66C–. The fungi which cause plant disease . Plant diseases; Fungi. 322 THE FUNGI WHICH CAUSE PLANT DISEASE E. australe Speg. Son foliar, forming spots, yellowish to eventually dark, usually 0.5-6 mm. in length; spores light to reddish-yellow, ovoid to spherical or slightly angled, chiefly 10-16 n in length; conidia Unear, somewhat curved, usually 30-55 x 1-2 ii. Common and destructive on many species of Physalis and on Solanum, especially on some of the cultivated forms throughout the Americas and in Africa. E. fuscum Schr."^ Sori in.leaves, about 2-6 mm. or by confluence much larger, spores
![. The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse Stock Photo](https://c8.alamy.com/comp/RDE4TR/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fia-439fusarium-on-corn-after-burrill-and-bar-rett-fig-440f-vasinfectum-a-macro-conidia-b-portion-of-a-hypha-c-a-germinating-macroconidium-after-reed-moniliform-6-10-n-long-macroconidia-falcate-acute-usually-3-septate-25-40-ix-long-it-causes-molding-of-com-several-other-undetermined-species-have-been-isolated-from-com-on-which-they-occur-as-the-cause-of-dry-rot-of-the-grainquotquot-a-fusarium-on-banana-is-by-essed-referred-to-ustilaginoidella-see-p-214-f-vasinfectum-atkquotquot-hyphse-RDE4TR.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse Stock Photo")
RMRDE4TR–. The fungi which cause plant disease . Plant diseases; Fungi. Fia. 439.—Fusarium on corn. After Burrill and Bar- rett. Fig. 440.—F. vasinfectum. A. Macro- conidia. B. Portion of a hypha. C. A germinating macroconidium. After Reed. moniliform, 6-10 n long; macroconidia falcate, acute, usually 3-septate, 25-40 ix long. It causes molding of com.*™ Several other undetermined species have been isolated from com on which they occur as the cause of dry rot of the grain."" A fusarium on banana is by Essed referred to Ustilaginoidella. See p. 214. F. vasinfectum Atk.^*""'*' Hyphse
RMRGWD3K–. Bulletin. Natural history; Natural history. 218 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 21, Art. 6 brown mycelium, fig. ii. The mycelium is white when young but becomes tan to brown with age. A dense growth of sur- face hyphae and a very sparse growth of aerial livpbae develop in culture. Pycnidia develop as partially submerged, dark brown to black, pseudoparenchyma- V c 0 0 # 9 9 • % Fig. 34.—Spores of Coniolhyrium. They are ovoid to subcylindric, olivaceous and 1- celled. X 430. tous, spheroidal structures with flattened bases; they are 150-500 /x in diameter. The conidia, Hg. 34, ar
RMRDE0CG–. Diseases of truck crops and their control . Vegetables. Fig. 48. Diseases of Lima Bean. a. h. c. different stages of downy mildew on pods, d. tuft of conidiophores and conidia of Phythophthora phaseoli, e. same as d. but greatly enlarged, /. g. conidia germinating by means of a germ tube, h. i. j. k. germination of conidia by means of zoospores, /. germinating zoospores (d. to I. after Thaxter), m. «. fertilization of the oogonium by the anthendium, o. Phoma blight on foliage, p. Phoma blight on pods {0. and p. after Halsted), r. mature oospores of P. phaseoli (o. to c, m. n. and r. after Cl
RMRFPWCN–. Some diseases of Puerto Rican forage crops. Forage plants Diseases and pests Puerto Rico. They are roughened when mature. The conidia are similar in shape to those shown in figure 7, B. They. Figure 11.—Ergot on Paspalum ylicatulu m (brownseed paspalum) caused by Clavi- ceps paspali. X 3. are 5/x x 15/x in size. The oval perithecia completely cover the stromatic head. They are 340/x x 119/x in size. The asci are cylin- drical and are 174^ long. The ascospores are filiform. Their meas- urements are 101m x 0.5-1^ {S3). The exudate of the sphacelial stage is high in carbohydrate and other fungi
RMRGWD57–. Bulletin. Natural history; Natural history. h 1941 CARTER: OAK DISEASES IN ILLINOIS 217 cular shields around the erunipent p c- iildia. The conidia, shown in the cross section of a pycnidiiim in fig. 31, are brown, 15-25 X 8-11 /i, continuous, and o(iid to ellipsoid. The conidiophores are hyaline, rodlike, 6-9 X 1.5-2.5 jx, and the oval ostioles are 15—25 ix in diameter. This fungus was not grown in culture. Our material compares closely with the morphological description of SplKierofisis queriiiiuni Cke. .^' Harkn. (Cooke ^' llarkness 1884). Bulgaria Canker Apothecia were obtained from Bu
Search Results for Conidia Stock Photos and Images (2,197)
Page 19 of 22