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Pycnidia Black & White Stock Photos
![. 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/PG45R5/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-PG45R5.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")
RMPG45R5–. 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.
![. 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
RMPG45R2–. 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
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
RMPG4EDF–. Diseases of economic plants . Plant diseases. FORAGE CROPS 385 brown. Each spot bears several light brown pycnidia visible on both surfaces of the leaf. Dodder (Cuscuta). — Dodder, or love vine, is a parasitic flowering plant. It consists of yellow, threadlike stems which coil closely around the alfalfa stems, and take nour- ishment from them. It reproduces by seed, and the seed may readily pass with alfalfa seed unless very carefully in-. 1 2 3 Fig. 164. — 1, Alfalfa seed ; 2, seed of large seeded dodder ; 3, seed of small seeded dodder, natural size. After Stew- art and others. spected. Th
![. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 435 The systematic place of Py- renochaeta is very disputed, I will therefore place it here as an appendix to Sphaerioi- daceae-Hyalosporae. 2292. Pyrenochaeta fur- furacea (Fries) Rostrup 02 a ^^^ c. icon., Syn: Periola furf. Fries El. II * Syll. IV "^"^ Under the specific name given above a fruit decay of apples has become described by Rostrup. The pycnidial pustules may appear within a small circular spot and later on spreading until the whole apple may be involved (see fig. 32). The pycnidia are erumpent and t Stock Photo](https://c8.alamy.com/comp/RE38X4/danish-fungi-as-represented-in-the-herbarium-of-e-rostrup-fungi-435-the-systematic-place-of-py-renochaeta-is-very-disputed-i-will-therefore-place-it-here-as-an-appendix-to-sphaerioi-daceae-hyalosporae-2292-pyrenochaeta-fur-furacea-fries-rostrup-02-a-c-icon-syn-periola-furf-fries-el-ii-syll-iv-quotquot-under-the-specific-name-given-above-a-fruit-decay-of-apples-has-become-described-by-rostrup-the-pycnidial-pustules-may-appear-within-a-small-circular-spot-and-later-on-spreading-until-the-whole-apple-may-be-involved-see-fig-32-the-pycnidia-are-erumpent-and-t-RE38X4.jpg ". Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 435 The systematic place of Py- renochaeta is very disputed, I will therefore place it here as an appendix to Sphaerioi- daceae-Hyalosporae. 2292. Pyrenochaeta fur- furacea (Fries) Rostrup 02 a ^^^ c. icon., Syn: Periola furf. Fries El. II * Syll. IV "^"^ Under the specific name given above a fruit decay of apples has become described by Rostrup. The pycnidial pustules may appear within a small circular spot and later on spreading until the whole apple may be involved (see fig. 32). The pycnidia are erumpent and t Stock Photo"){kind=icon}
RMRE38X4–. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 435 The systematic place of Py- renochaeta is very disputed, I will therefore place it here as an appendix to Sphaerioi- daceae-Hyalosporae. 2292. Pyrenochaeta fur- furacea (Fries) Rostrup 02 a ^^^ c. icon., Syn: Periola furf. Fries El. II * Syll. IV "^"^ Under the specific name given above a fruit decay of apples has become described by Rostrup. The pycnidial pustules may appear within a small circular spot and later on spreading until the whole apple may be involved (see fig. 32). The pycnidia are erumpent and t
![. 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/PG45P5/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-PG45P5.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")
RMPG45P5–. 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
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
![. The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio Stock Photo](https://c8.alamy.com/comp/PG4G3J/the-fungi-which-cause-plant-disease-plant-diseases-fungi-238-the-fungi-which-cause-plant-disease-over-one-hundred-thirty-species-are-known-some-are-impor-tant-parasites-conidial-forms-are-found-in-phoma-and-phyllosticta-g-bidwellii-e-v-amp-r-quot-perithecia-minute-globose-subepidermal-erumpent-perforate-asci-clavate-cylindric-obtuse-60-70-x-10-13-fi-spores-elliptic-to-oblong-continuous-12-17-x-43-5-fi-conidia-=phoma-uvicola-phyllosticta-labruscae-naemospora-ampeucida-borne-in-pycnidia-180-x-180-fi-subepidermal-elliptic-fig-173diagrammatic-sectio-PG4G3J.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio Stock Photo")
RMPG4G3J–. The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio
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
![. 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/PG45RR/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-PG45RR.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")
RMPG45RR–. 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,
RMRDBBPF–. Chestnut blight. Chestnut blight; Chestnut. Plate X.. Fig. 1.—Endothia fluens. Vertical Section of a Stroma from Italy, Showing Young Perithecia IN A Single Layer. X 49. Fig. 2.—Endothia qyrosa. Ver- tical Section of a Stroma on Beech, Showing Mature Pycnidia with Mature Perithecia below Them, x 32. FiQ. 3.—Endothia qyrosa. Vertical Section of a Portion of a Large Stroma, Showing Perithecia Irregularly Arranged IN Several Layers.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these ill
RMPG0R9C–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. DETAILED ACCOUNT OF SPECIFIC DISEASES OF PLANTS 5II. Fig. 183.—Details of cranberry scald fungus {Guignardia vaccinit). i, A cran- berry leaf, showing pycnidia of Guignardia vaccinii thickly scattered over the under surface; a, a cranberry blossom blasted by Guignardia vaccinii, showing pycnidia on calyx, corolla, and pedicel; 6, a blasted fruit, showing pycnidia. a, A vertical section of a single pycnidium of Guignardia vaccinii from a cranberry leaf, showing pycno- spores in various s
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
RMPG0RB7–. The fungi which cause plant disease . Plant diseases; Fungi. 496 THE FUNGT WHICH CAUSE PLANT DISEASE Asteroma De Candolle (p. 482) Pycnidia very small, globose, erumpent, often on a mass of hyphae; conidia ovate or short cylindric. In part =Gnomonia. See p' 274. About forty species chiefly parasitic. A. padi (D. C.) Grev. on Prunus=Gnomonia padicola. See p. 275. A. geographicum (D. C.) Desm. occurs on various species of Pomaceae; A. punctiforme Berk, on the rose; A. stuhlmanni Hen. on bananas and pineapples in Africa. A. codisei All. is said to be a serious parasite of Codiseum.^^ Vermicular
RMRDE2TB–. Diseases of economic plants . Plant diseases. FORAGE CROPS 385 brown. Each spot bears several light brown pycnidia visible on both surfaces of the leaf. Dodder (Cuscuta). — Dodder, or love vine, is a parasitic flowering plant. It consists of yellow, threadlike stems which coil closely around the alfalfa stems, and take nour- ishment from them. It reproduces by seed, and the seed may readily pass with alfalfa seed unless very carefully in-. 1 2 3 Fig. 164. — 1, Alfalfa seed ; 2, seed of large seeded dodder ; 3, seed of small seeded dodder, natural size. After Stew- art and others. spected. Th
RMPG46EM–. The fungi which cause plant disease . Plant diseases; Fungi. 246 THE FUNGI WHICH CAUSE PLANT DISEASE. FiQ. 180.—M. sentina, Septona stage. Portion of a section through a pear leaf spot, showing e, e, epidermis; p, pali- sade cells sp, spongy parenchyma; o, S. piricola pycnidium, giving out spores, b. After Longyear. M. sentina (Fr.) Schr. Perithecia, 80-110 /i; on dead spots of leaves, the long ostiole erumpent; asci clavate, 60-75 x 11-13 fi, colorless; spores fusiform, curved or straight, 26-33 x Conidia (=Septoria piricola) borne in pycnidia which are similar in size and form to the perit
RMRDEX8T–. Diseases of economic plants . Plant diseases. APPLE DISEASES OF SPECIAL CROPS PoMACEOus Fruits Bitter rot, ripe rot {Glomerella rufomaculans (Berk.) Spaul. & von Schrenk). Untrue to its. two common names, this malady does not always render apples bitter, though. Fig. 21.âApple bitter rot (glomerellose) in early stage showing pycnidia. After Scott. this is sometimes the case; nor is the disease always lim- ited to ripe fruit. Its effect is seen upon both the fruit and the twig. Upon the fruit it produces a soft, wet, or in later stages corky, more or â less dry, brown, tan-colored, or bla
![. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P Stock Photo](https://c8.alamy.com/comp/PG0RBY/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fig-336p-solitaria-1-month-old-colony-on-apple-agar-after-scott-and-rorer-the-fimgus-was-grown-in-pure-culture-and-its-identity-on-twig-leaf-and-fruit-was-shown-by-cross-inoculation-p-persicae-sacc-is-common-on-peach-leaves-p-piricola-sacc-amp-speg-is-foimd-on-apple-and-pear-p-limitata-pkquot-is-reported-as-the-cause-of-an-apple-leaf-spot-spots-round-minute-2-6-mm-brown-or-reddish-pycnidia-epiph-yllous-black-few-punctiform-spores-ellipsoid-7-8-x-4-jn-p-mail-p-amp-d-occurs-on-apple-and-pear-p-PG0RBY.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P Stock Photo")
RMPG0RBY–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P
![. 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.
RMRDE0JD–. Diseases of truck crops and their control . Vegetables. Fig. 26. Sweet Potato Diseases. a. Black rot at place of a bruise, b. black shank, c. showing a pycnidium of the black rot fungus, d.- dry rot, e. cross section through /, to show the effect of the disease on the root, /. Java black rot surface view, showing strings of spores oozing out from the center of spot, g. cross section through diseased sweet potato root to show pycnidia of the fungus Diplodia tubericola.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
RMRDE1FN–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. DETAILED ACCOUNT OF SPECIFIC DISEASES OF PLANTS 5II. Fig. 183.—Details of cranberry scald fungus {Guignardia vaccinit). i, A cran- berry leaf, showing pycnidia of Guignardia vaccinii thickly scattered over the under surface; a, a cranberry blossom blasted by Guignardia vaccinii, showing pycnidia on calyx, corolla, and pedicel; 6, a blasted fruit, showing pycnidia. a, A vertical section of a single pycnidium of Guignardia vaccinii from a cranberry leaf, showing pycno- spores in various s
![. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 419. .^A^S^^ Fig. 31. Phoma Rostrupii. a. Root of Daucus with pycnidia. b. Stem with pycnidia. c. Part of the same, enlarged. d. Cross?section of a pycnidium. e. Spores -j-. From R 02 a. Tamarix decandra and Myricaria germanka. S. Landbohajskolens Have, Sept.—Nov. 2144. Phoma polemonii Cooke, Syll. X "^ All. VI ^' On dead stems of Polemonium coeruleum. S. Landbohejskolens Have. 2145. Phoma silvatica Sacc, Syll. Ill i=«, All. VI ^"^ Melampyrum pratense. J. Skovgaard!, Rindsholm (^^/e 06!). 2146. Phoma sceptri Karst Stock Photo](https://c8.alamy.com/comp/RE38XB/danish-fungi-as-represented-in-the-herbarium-of-e-rostrup-fungi-419-as-fig-31-phoma-rostrupii-a-root-of-daucus-with-pycnidia-b-stem-with-pycnidia-c-part-of-the-same-enlarged-d-crosssection-of-a-pycnidium-e-spores-j-from-r-02-a-tamarix-decandra-and-myricaria-germanka-s-landbohajskolens-have-septnov-2144-phoma-polemonii-cooke-syll-x-quot-all-vi-on-dead-stems-of-polemonium-coeruleum-s-landbohejskolens-have-2145-phoma-silvatica-sacc-syll-ill-i=-all-vi-quot-melampyrum-pratense-j-skovgaard!-rindsholm-e-06!-2146-phoma-sceptri-karst-RE38XB.jpg ". Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 419. .^A^S^^ Fig. 31. Phoma Rostrupii. a. Root of Daucus with pycnidia. b. Stem with pycnidia. c. Part of the same, enlarged. d. Cross?section of a pycnidium. e. Spores -j-. From R 02 a. Tamarix decandra and Myricaria germanka. S. Landbohajskolens Have, Sept.—Nov. 2144. Phoma polemonii Cooke, Syll. X "^ All. VI ^' On dead stems of Polemonium coeruleum. S. Landbohejskolens Have. 2145. Phoma silvatica Sacc, Syll. Ill i=«, All. VI ^"^ Melampyrum pratense. J. Skovgaard!, Rindsholm (^^/e 06!). 2146. Phoma sceptri Karst Stock Photo")
RMRE38XB–. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 419. .^A^S^^ Fig. 31. Phoma Rostrupii. a. Root of Daucus with pycnidia. b. Stem with pycnidia. c. Part of the same, enlarged. d. Cross?section of a pycnidium. e. Spores -j-. From R 02 a. Tamarix decandra and Myricaria germanka. S. Landbohajskolens Have, Sept.—Nov. 2144. Phoma polemonii Cooke, Syll. X "^ All. VI ^' On dead stems of Polemonium coeruleum. S. Landbohejskolens Have. 2145. Phoma silvatica Sacc, Syll. Ill i=«, All. VI ^"^ Melampyrum pratense. J. Skovgaard!, Rindsholm (^^/e 06!). 2146. Phoma sceptri Karst
![. 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,
![. The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio Stock Photo](https://c8.alamy.com/comp/RDDBAC/the-fungi-which-cause-plant-disease-plant-diseases-fungi-238-the-fungi-which-cause-plant-disease-over-one-hundred-thirty-species-are-known-some-are-impor-tant-parasites-conidial-forms-are-found-in-phoma-and-phyllosticta-g-bidwellii-e-v-amp-r-quot-perithecia-minute-globose-subepidermal-erumpent-perforate-asci-clavate-cylindric-obtuse-60-70-x-10-13-fi-spores-elliptic-to-oblong-continuous-12-17-x-43-5-fi-conidia-=phoma-uvicola-phyllosticta-labruscae-naemospora-ampeucida-borne-in-pycnidia-180-x-180-fi-subepidermal-elliptic-fig-173diagrammatic-sectio-RDDBAC.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio Stock Photo")
RMRDDBAC–. The fungi which cause plant disease . Plant diseases; Fungi. 238 THE FUNGI WHICH CAUSE PLANT DISEASE Over one hundred thirty species are known. Some are impor- tant parasites. Conidial forms are found in Phoma and Phyllosticta. G. bidwellii (E.) V. & R.^- ^*^"^ Perithecia minute, globose, subepidermal, erumpent, perforate; asci clavate-cylindric, obtuse, 60-70 x 10-13 fi; spores elliptic to oblong, continuous, 12-17 x 43^-5 fi. Conidia (=Phoma uvicola, Phyllosticta labruscae, Naemospora ampeUcida) borne in pycnidia 180 x 180 fi, subepidermal, elliptic,. Fig. 173.—Diagrammatic sectio
RMRDE5CD–. The fungi which cause plant disease . Plant diseases; Fungi. 496 THE FUNGT WHICH CAUSE PLANT DISEASE Asteroma De Candolle (p. 482) Pycnidia very small, globose, erumpent, often on a mass of hyphae; conidia ovate or short cylindric. In part =Gnomonia. See p' 274. About forty species chiefly parasitic. A. padi (D. C.) Grev. on Prunus=Gnomonia padicola. See p. 275. A. geographicum (D. C.) Desm. occurs on various species of Pomaceae; A. punctiforme Berk, on the rose; A. stuhlmanni Hen. on bananas and pineapples in Africa. A. codisei All. is said to be a serious parasite of Codiseum.^^ Vermicular
RMRPY1RP–. Hawaiian Fungi. Fungi. Stevens—Hawaiian Fungi 85 61. ENTHALLOPYCNIDIUM Stevens n. gen. Thallus that of the Trichopeltaceae. Pycnidia only known. Pycnio- spores 1-celled, linear, hyaline. No. 124. Enthallopycnidium gouldiae Stevens n. sp. Thalli 1-3 mm. in diameter, almost circular, consisting of a complex plate result- ing from the coalescence of branch thalli; cells usually short (6/^). Pycnidia small (40a*) to large (90a*). Ostiole as in Trichopeltis. Spores linear, hyaline, i-celled, 7-7.5 by 111. (See fig. 18, a.) On Gouldia sp. Hawaii: Hamakua, upper ditch trail, July 31, no. 1073a. In
RMRPY163–. Hawaiian Fungi. Fungi. Figure;30.—Pycnidia of Leptothyrium sidae (No. 912) on Sida spinosa: a, view from above; b, section showing spores. No. 307. Leptothyrium pothi Amy G. Weedon n. sp. Spots definite, irregular in shape, 0.5 by 1 cm. to 8 by 3 cm., or by coalescing occupying almost half of the leaf area, limited by the mid-rib, visible from both sides of the leaf, ashy to white. Pycnidia more abundant near the edge of the spot, gregarious, in areas about 2 by 5 mm. to 8 mm. in diameter, arranged in a somewhat concentric manner; hypophyllous, black, subepidermal, 133-180 by 136-198^. Ostio
![. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P Stock Photo](https://c8.alamy.com/comp/RDE5DK/the-fungi-which-cause-plant-disease-plant-diseases-fungi-fig-336p-solitaria-1-month-old-colony-on-apple-agar-after-scott-and-rorer-the-fimgus-was-grown-in-pure-culture-and-its-identity-on-twig-leaf-and-fruit-was-shown-by-cross-inoculation-p-persicae-sacc-is-common-on-peach-leaves-p-piricola-sacc-amp-speg-is-foimd-on-apple-and-pear-p-limitata-pkquot-is-reported-as-the-cause-of-an-apple-leaf-spot-spots-round-minute-2-6-mm-brown-or-reddish-pycnidia-epiph-yllous-black-few-punctiform-spores-ellipsoid-7-8-x-4-jn-p-mail-p-amp-d-occurs-on-apple-and-pear-p-RDE5DK.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P Stock Photo")
RMRDE5DK–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 336.—P. solitaria. 1-month-old colony on apple agar. After Scott and Rorer. The fimgus was grown in pure culture and its identity on twig, leaf and fruit was shown by cross inoculation. P. persicae Sacc. is common on peach leaves. P. piricola Sacc. & Speg. is foimd on apple and pear. P. limitata Pk.'" is reported as the cause of an apple leaf spot. Spots round minute, 2-6 mm., brown or reddish; pycnidia epiph- yllous, black, few, punctiform; spores ellipsoid, 7-8 x 4 jn. P. mail P. & D. occurs on apple and pear. P
RMRDDB89–. The fungi which cause plant disease . Plant diseases; Fungi. 246 THE FUNGI WHICH CAUSE PLANT DISEASE. FiQ. 180.—M. sentina, Septona stage. Portion of a section through a pear leaf spot, showing e, e, epidermis; p, pali- sade cells sp, spongy parenchyma; o, S. piricola pycnidium, giving out spores, b. After Longyear. M. sentina (Fr.) Schr. Perithecia, 80-110 /i; on dead spots of leaves, the long ostiole erumpent; asci clavate, 60-75 x 11-13 fi, colorless; spores fusiform, curved or straight, 26-33 x Conidia (=Septoria piricola) borne in pycnidia which are similar in size and form to the perit
RMRPY176–. Hawaiian Fungi. Fungi. Stevens—Hawaiian Fungi 141 spots gray or white, 0.5-2 mm. in diameter; margin raised, pycnidia epi- phyllous, 35-80[x in diameter; conidia few-septate. 124. RHABDOSPORA Mont, in Fl. Alg. Bot. p. 592. Emend. Sacc. Mich. vol. 2, p. 26, 1880 No. 301. Rhabdospora pittospori Stevens & Young n. sp. Pycnidia numerous, black, 400-800 /* in diameter, ostiole large. Conidia abundant, filiform, hyaline, straight or curved, obtuse, 1 to few-septate, 12-22 by 21*, conidio- phores 15-18 M long. On dead capsules of Pittosporum sp. collected by C. N. Forbes, no. 21. Hawaii: Kona,
RMRDBFEG–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 46. Carnation Diseasbs. a. White tip (after Clinton), b-f. carnation rust parasite (after Blodgett, F. H.), g. stigmanose (after Woods), h. Septoria leaf spot (after Potter, M. C), »• pycnidia of Septoria dianthi, j. pow- dery mildew fungus (after Mercer, W. B.).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Taubenhaus, Ja
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