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Rust spores Stock Photos and Images
RMRH2XHW–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 104 UROMYCES Teleutospores. Sori similar, but less pulverulent, and blackish-brown; spores subglobose to ovate, not thickened above, but with a hyaline papilla as much as 6 /u. high, smooth, brown, 22—35 X 18—25yLt; pedicels short, hyahne, deciduous.. Fi 57 f7 Geranii ^^^ Geranium dissectum, G. molle, G. Teleutoppores on G. pratense, G. pyrenaicum, G. silvaticum. silvaticum. -kt , 7n • t tt i ^ t JNot common, ^cidia, Marcn to June; teleutospores, June—October. (Fig. 57.) Liro proved that the secidium of this p
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 348 MELAMPSORA Teleutospores. Sori hypophyllous, subepidermal, scattered over the leaf singly ;ni<l in groups, pulvinate, —$ mm., blackish-brown, nol shining; spores prismatic, rounded at both ends, :]')—60x6—10//.; epispore clear-brown, L—H/z thick, scarcely thickened above, without evident germ-pore. Caeomata on Allium Cepa, A. ursinum and oilier species, M.iy : uredo- and teleutospores on Populus nigra, P. balsami- fera. <Fig. 260.) The description is chiefly after Klebahn. The teleut Stock Photo](https://c8.alamy.com/comp/RH1GN2/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-348-melampsora-teleutospores-sori-hypophyllous-subepidermal-scattered-over-the-leaf-singly-niltl-in-groups-pulvinate-mm-blackish-brown-nol-shining-spores-prismatic-rounded-at-both-ends-60x610-epispore-clear-brown-lhz-thick-scarcely-thickened-above-without-evident-germ-pore-caeomata-on-allium-cepa-a-ursinum-and-oilier-species-miy-uredo-and-teleutospores-on-populus-nigra-p-balsami-fera-ltfig-260-the-description-is-chiefly-after-klebahn-the-teleut-RH1GN2.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 348 MELAMPSORA Teleutospores. Sori hypophyllous, subepidermal, scattered over the leaf singly ;ni<l in groups, pulvinate, —$ mm., blackish-brown, nol shining; spores prismatic, rounded at both ends, :]')—60x6—10//.; epispore clear-brown, L—H/z thick, scarcely thickened above, without evident germ-pore. Caeomata on Allium Cepa, A. ursinum and oilier species, M.iy : uredo- and teleutospores on Populus nigra, P. balsami- fera. <Fig. 260.) The description is chiefly after Klebahn. The teleut Stock Photo")
RMRH1GN2–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 348 MELAMPSORA Teleutospores. Sori hypophyllous, subepidermal, scattered over the leaf singly ;ni<l in groups, pulvinate, —$ mm., blackish-brown, nol shining; spores prismatic, rounded at both ends, :]')—60x6—10//.; epispore clear-brown, L—H/z thick, scarcely thickened above, without evident germ-pore. Caeomata on Allium Cepa, A. ursinum and oilier species, M.iy : uredo- and teleutospores on Populus nigra, P. balsami- fera. <Fig. 260.) The description is chiefly after Klebahn. The teleut
RMRH2WW4–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON RUBIACE^E 165 dZcidiospores. ./Ecidia hypophyllous, scattered or collected in orbicular clusters on roundish or oblong paler spots, shortly cylindrical, with a short white recurved margin; spores globose or broadly ellipsoid, orange-yellow, somewhat smooth, 16—23 ft, Uredospores. Sori hypophyllous, minute, roundish, on the stems linear, reddish-brown, often confluent; spores globose to ovate, aculeolate, pale-brown, 22—30 x 17—23 /x, with two or three germ-pores.. Fip. 11-5. P. punctata. Tel
RMRH1HPM–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 196 PUCCINIA Semadeni showed that the spores from A. siloestris infected M. odorata readily (Centralbl. f. Bakt. pt. 2, xiii. 217—9), but whether the form on C. temulum belongs to the same species (or is a biological race of it) seems at present to be undetermined. Distribution : Central and Northern Europe, Siberia. 68. Puccinia Conii Fckl. Uj'edo Conii Strauss in Wetter. Ann. ii. 96. Trichohasis Conii Cooke, Micr. Fung. p. 225. T. Umhellatariun Lev. ; Cooke, Micr. Fung. p. 225 p.p. Puccinia Conii Fckl. Syrab.
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
RMRH2X3X–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. Fig. 94. P. Cirsii. Teleuto- spores, on C. palustre, from Hereford. Fig. 95. P. Cirsii. Teleuto- spore and uredospore, on G. lanceolatum. Teleutospores. Sori mostly hypophyllous only, similar, but blackish-brown or black ; spores ellipsoid or somewhat obovate, rounded at both ends, not thickened above, hardly constricted, verruculose or merely punctate, chestnut-brown, 25—38 x 17—25/it; epispore thin; pedicels hyaline, very short. On Cirsium, Dupplin Castle, Perth (M. C. Cooke). On G. pratense,
RMRH2RMH–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. Fig. 252. E. Sem- pervivi. Sori on Sempervivum mon- tanum (reduced). Spermogones. Scattered amongst the secidia, roundish. Teleutospores. Sori rather large, amphi- genous, sunken in the leaf, secidium-like, sur- rounded by many layers of hyphse and by a peridium, which opens by a pore at the summit and finally becomes cup-shaped; spores bluntly polygonal or roundish, }^ellowish-brown, densely reticulate-ver rucose, 24—35 x 21—28//.; epispore 3—4^ thick. On Sempervivum tectorum; also found on S.
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
RMRH2X6A–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON COMPOSITE 137 Teleutospores. Sori amphigenous, on brown orbicular spots, densely gregarious and confluent in roundish clusters, 3—6 mm. broad, occupying the whole spot, often circinate, long covered by the epidermis, at length rather pulverulent, deep-brown; spores ovate to oblong, with a very minute paler apical papilla, hardly constricted, rounded or slightly attenuated below, smooth, pale-brown, 30—45 x 16—24/a; pedicels hyaline, very short. On Senecio Jacobaea. August- -November. Not com
RMRE37YJ–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON COMPOSITiE 187 Teleutospores. Sori amphigenous, on brown orbicular spots, densely gregarious and confluent in roundish clusters, 3—6 mm. broad, occupying the whole spot, often circinate, long covered by the epidermis, at length rather pulverulent, deep-brown; spores ovate to oblong, with a very minute paler apical papilla, hardly constricted, rounded or slightly attenuated below, smooth, pale-brown, 30—45 x 16—24/x; pedicels hyaline, very short. On Senecio Jacobaea. August—November. Not common. Closely allie
RMRH2RYK–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. CRONAKTIUM 317 'Teleutospores. Columns hypophyllous, cylindrical, curved, up to 2 mm. long, crowded especially along the veins of the leaf, sometimes covering the whole leaf, orange to brownish- yellow ; spores oblong, smooth, reaching 70 fi long x 21 fi broad. vEcidia on stems and branches of Pinus Cembra, P. monti- cola, P. Strobus, March—June; uredo- and teleutospores on Uibes nii/rum, R. rubrum, etc., July—October. Uncommon except when imported; Surrey, King's Lynn, Exeter, West- burv, Wobu
RMRH2W1H–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON CYPERACEy}. PL p. 67. Cooke, Handb. p. 493 ; Micr. Fung. p. 203 p.p. Spermogones. Epiphyllous, in small clusters, honey-coloured. JEcidiospores. Mcidm hypophyllous or occasionally amphi- genous, often on the petioles and stems, on reddish, yellow or pur- plish spots, in dense clusters of various sizes which are often very large and cause great swelling and distortion on the stems, cup- shaped, with torn white recurved margin; spores verruculose, orange, 16—26x12—20 yti. Uredospores. Sori amphige-. nous, gene
RMRE38A4–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 27. P. Poai-um. An seoidio- spore germinating on leaf of Poa annua, x 180.. Fig. 26. P. Poaruin. Vertical section through edge of secidium; showing a, the crushed cells of the upper myce- lium, pushed on one side ; 6, the chain of peridium-cells; c, the spore bed, giviBg rise to d, the chains of Eecidio- spores. X 600. The black dots are the nucleoli; one ascidiospore-mother- cell has three nuclei. case in most of the higher forms of the Uredinales, arises deep in the leaf, and the densely packed knot of h
![. Lessons in botany. Botany. FUNGI: WHEAT RUST. 133 For a fuller study of the wheat rust and of other fungi see the author's larger " Elementary Botany," Chapters XX, XXI.. Wheat rust. Fig. 113- Section through leaf of barberry at point affected with the cluster-cup stage of the wheat rust; spermagonia above, aecidia below. (After Marshall-Ward.) Synopsis. A parasite on grains, grasses, and on the barberry. Vegetative part of plant; mycelium growing within the tissues of the host. Fruiting part of the plant. 1st. Red rust (one-celled spores in pustules on blades and stems of the whea Stock Photo](https://c8.alamy.com/comp/RDDA8K/lessons-in-botany-botany-fungi-wheat-rust-133-for-a-fuller-study-of-the-wheat-rust-and-of-other-fungi-see-the-authors-larger-quot-elementary-botanyquot-chapters-xx-xxi-wheat-rust-fig-113-section-through-leaf-of-barberry-at-point-affected-with-the-cluster-cup-stage-of-the-wheat-rust-spermagonia-above-aecidia-below-after-marshall-ward-synopsis-a-parasite-on-grains-grasses-and-on-the-barberry-vegetative-part-of-plant-mycelium-growing-within-the-tissues-of-the-host-fruiting-part-of-the-plant-1st-red-rust-one-celled-spores-in-pustules-on-blades-and-stems-of-the-whea-RDDA8K.jpg ". Lessons in botany. Botany. FUNGI: WHEAT RUST. 133 For a fuller study of the wheat rust and of other fungi see the author's larger " Elementary Botany," Chapters XX, XXI.. Wheat rust. Fig. 113- Section through leaf of barberry at point affected with the cluster-cup stage of the wheat rust; spermagonia above, aecidia below. (After Marshall-Ward.) Synopsis. A parasite on grains, grasses, and on the barberry. Vegetative part of plant; mycelium growing within the tissues of the host. Fruiting part of the plant. 1st. Red rust (one-celled spores in pustules on blades and stems of the whea Stock Photo")
RMRDDA8K–. Lessons in botany. Botany. FUNGI: WHEAT RUST. 133 For a fuller study of the wheat rust and of other fungi see the author's larger " Elementary Botany," Chapters XX, XXI.. Wheat rust. Fig. 113- Section through leaf of barberry at point affected with the cluster-cup stage of the wheat rust; spermagonia above, aecidia below. (After Marshall-Ward.) Synopsis. A parasite on grains, grasses, and on the barberry. Vegetative part of plant; mycelium growing within the tissues of the host. Fruiting part of the plant. 1st. Red rust (one-celled spores in pustules on blades and stems of the whea
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,
RMRE2GA9–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. CEONARTIUM 317 Teleutospores. Columns hypophyllous, cylindrical, curved, up to 2 mm. long, crowded especially along the veins of the leaf, sometimes covering the whole leaf, orange to brownish- yellow ; spores oblong, smooth, reaching 70 fi long x 21 /x broad. jEcidia on stems and branches of Pinus GeHibra, P. monti- cola, P- Strobus, March—June; uredo- and teleutospores on Kibes nigrum, R. rubrurn, etc.,'July—October. Uncommon except when imported; Surrey, King's Lynn, Exeter, West- bury, Wobum, Windsor Forest
![. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON POLYGONACE/I': 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. viviparum issued by Fuckel (see Synib. Myc. p. 57). It is a purely Alpine species. ^[icr. Fung. ]). 199 97. Puccinia Polygoni-amphibii Pers. Mcidiam Geranii DC. ; Cooke, Haudb. p. 543 p.p.(?). yE*. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Pulygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasis Polygonorum Stock Photo](https://c8.alamy.com/comp/RH1H7B/the-british-rust-fungi-uredinales-their-biology-and-classification-uredineae-on-polygonacei-227-seen-no-british-specimens-but-those-collected-at-mar-lodge-and-braemar-which-are-described-above-the-spores-of-these-agree-with-those-of-a-specimen-on-pol-viviparum-issued-by-fuckel-see-synib-myc-p-57-it-is-a-purely-alpine-species-icr-fung-199-97-puccinia-polygoni-amphibii-pers-mcidiam-geranii-dc-cooke-haudb-p-543-pp-ye-sanguinolentum-lindr-myk-notiz-in-bot-notis-1900-p-241-uredo-pulygonorum-dc-grev-sc-cr-fl-pi-80-trichobasis-polygonorum-RH1H7B.jpg ". The British rust fungi (Uredinales), their biology and classification. Uredineae. ON POLYGONACE/I': 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. viviparum issued by Fuckel (see Synib. Myc. p. 57). It is a purely Alpine species. ^[icr. Fung. ]). 199 97. Puccinia Polygoni-amphibii Pers. Mcidiam Geranii DC. ; Cooke, Haudb. p. 543 p.p.(?). yE*. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Pulygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasis Polygonorum Stock Photo")
RMRH1H7B–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON POLYGONACE/I': 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. viviparum issued by Fuckel (see Synib. Myc. p. 57). It is a purely Alpine species. ^[icr. Fung. ]). 199 97. Puccinia Polygoni-amphibii Pers. Mcidiam Geranii DC. ; Cooke, Haudb. p. 543 p.p.(?). yE*. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Pulygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasis Polygonorum
RMRE0P7P–. Elementary botany. Botany. Fig. 150. Head of wheat showing black rust spots on the chaff and awns.. Fig. 151, Teleutospores of wheat rust, showing two cells and the pedicel. Fig. 152. Uredospores of wheat rust, one showing remnants of the pedicel. in water on a slide, and examine with a microscope, we see numerous gonidia, composed of two cells, and having thick, brownish walls as shown in fig. 151. Usually there is a slender brownish stalk on one end. These gonidia are called leleulo- spores. They are somewhat oblong or elliptical, a little con- stricted where the septum separates the two c
RMRH11CH–. Bulletin. Agriculture -- Ontario. the skin of the stem. Three kinds of spores are produced, viz., cluster- cup spores, red summer spores, and black winter spores, all on the same plant.. Asparagus Rust. 1, a diseased stem; 2, the cluster-cup stage on early plants ; 3, spores of cluster-cup ; 4, spores of summer stage (uredospores); 5, spores of the the winter, or telentospore stage. Remedies : Spray with resin-bordeaux from July to September at intervals of ten days or two weeks ; dust liberally with flowers of sul- phur ; cut and burn the dead stems in autumn; plant resistant varieties, suc
RMRH1GWN–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 344 MELA.MI'SOKA. Spermogones. Hardly projecting, flat, mostly under the stomata. JEcidiospores. Cseoraata irregular in outline, clustered or circinate oe large pale-yellowish spots, often confluent, 1—2 mm. diam.; bright orange- yellow: spores roundish-polygonal, 11—20 x 11—15 jx epispore very thin, delicately warted. Uredospores. Sori hypophyllous, minute, deep-orange, causing yellow spots on the upper side: spores more or less round, orange, echmulate, 13—17x12—14 /x; paraphyses mostly capi
RMRH1GJN–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. MELAMPSORA 355 chains, ellipsoid to polygonal or subclavate, 18—28 x 10 epispore colourless, about 2 /x thick, rather densely verruculose, with no perceptible germ-pores; no para- physes. Teleutospores. Sori hypophyllous, subepidermal, small, roundish, red- dish-brown, then dark-brown; spores prismatic, more or less rounded above, pale-brown, 28—40 x 10—17 //,; epi- spore thickened (up to 3 p,) above. -18^;. Fig. 265. M. Hypericorum. a, teleutospores, under the epidermis; b, ascidiospore, witho
RMRE3731–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON GRAMINE^ 285 spores subglobose or ellipsoid, verruculose, yellowish, 19—82 x 16—24/x.J Uredospores. Sori epiphyllous, very rarely hypophyllous, on minute yellow spots, elliptical or oblong, minute, pale rust- coloured ; spores globose to ovate, echinulate, yellowish, 19—30 X 19—26 fji, with numerous germ-pores, and mixed with nume- rous capitate paraphyses which are 10—14^ broad and as much as 80 fA, long.. Fig. 215. P. Arrhenathevi. a, teleutospores on Arrheiiatherum, from Hampton- in-Arden ; 6, another, an
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. L52 PUCCINIA I redosjx.res. S«»ri hypophyllous, on pallid irregular spots, scattered, minute punctiforra, pul- verulent, pallid-brown : spores more or less globose, echinulate, yellow- brown, lb' — 24 fji. with three (rarely four) germ-pores. Teleutospores. Sori similar, surrounded bv the cleft epidermis, "tSU'JSSSS-.* blackish-brou",,: spores ellipsoid, rounded and not thickened above, not constricted, rounded below, very delicately verruculose, brown, 26—36 x 16—24 /x; pedicels hyal Stock Photo](https://c8.alamy.com/comp/RH2X1J/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-l52-puccinia-i-redosjxres-sri-hypophyllous-on-pallid-irregular-spots-scattered-minute-punctiforra-pul-verulent-pallid-brown-spores-more-or-less-globose-echinulate-yellow-brown-lb-24-fji-with-three-rarely-four-germ-pores-teleutospores-sori-similar-surrounded-bv-the-cleft-epidermis-quottsujssss-blackish-brouquot-spores-ellipsoid-rounded-and-not-thickened-above-not-constricted-rounded-below-very-delicately-verruculose-brown-2636-x-1624-x-pedicels-hyal-RH2X1J.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. L52 PUCCINIA I redosjx.res. S«»ri hypophyllous, on pallid irregular spots, scattered, minute punctiforra, pul- verulent, pallid-brown : spores more or less globose, echinulate, yellow- brown, lb' — 24 fji. with three (rarely four) germ-pores. Teleutospores. Sori similar, surrounded bv the cleft epidermis, "tSU'JSSSS-.* blackish-brou",,: spores ellipsoid, rounded and not thickened above, not constricted, rounded below, very delicately verruculose, brown, 26—36 x 16—24 /x; pedicels hyal Stock Photo")
RMRH2X1J–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. L52 PUCCINIA I redosjx.res. S«»ri hypophyllous, on pallid irregular spots, scattered, minute punctiforra, pul- verulent, pallid-brown : spores more or less globose, echinulate, yellow- brown, lb' — 24 fji. with three (rarely four) germ-pores. Teleutospores. Sori similar, surrounded bv the cleft epidermis, "tSU'JSSSS-.* blackish-brou",,: spores ellipsoid, rounded and not thickened above, not constricted, rounded below, very delicately verruculose, brown, 26—36 x 16—24 /x; pedicels hyal
RMRE2G6B–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 252. E. Sem- pervivi. Sori on Seinpervivum mon- tanum (reduced). Speriiwgones. Scattered amongst the seciSia, roundish. Teleutospores. Sori rather large, amphi- genous, sunken in the leaf, secidium-like, sur- rounded by many layers of hyphse and by a peridium, which opens by a pore at the summit and finally becomes cup-shaped; spores bluntly polygonal or roundish, yellowish-brown, densely reticulate-ver rucose, 24—35 x 21—28/x; epispore 3—4i/jl thick. On Sempervivum tectorum; also found on *S. calcareum, S
RMRH2Y3T–. The British rust fungi (Uredinales), their biology and classification. Uredineae. Fig. 27. P. Poarum. An a3citlio- spore germinating on leaf of Poa annua, x 180.. Fig. 26. P. Poarum. Vertical section through edge of BBcidium; showing a, the crushed cells of the upper myce- lium, pushed on one side ; b, the chain of peridium-cells; c, the spore bed, giving rise to d, the chains of tecidio- spores. X 600. The black dots are the nucleoli; one tecidiospore-mother- cell has three nuclei. case in most of the higher forms of the Uredinales, arises deep Fig-28. P. Poarum. a.ansecidio- spore germinat
RMRH2RTY–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. COLEOSPORIUM 327 (2) Coleosporium Melampyri Karst. Uredo Melampyri Rebentisch, Flor. Neomarch. p. 355. Coleosporium Melampyri Karst. Myc. Fenn. iv. 62. Fischer, Ured. Schweiz, p. 440, f. 269. Peridermium Soraueri Kleb. Zeitschr. f. Pflanzenkr. iv. 194. The only apparent differences from C. Euphrasiae are in the size of the spores: uredospores 24—35 x 21—28 //,; teleutospores as much as 115fi long, 21—28p wide; epispore very thick (up to 28/x) at the summit. iEcidia on leaves of Pinus silvestris
![. Biology; the story of living things. 580 MAN AS A CONQUEROR called "damping off," which attacks seedlings, white "rust," the brown rot of lemons, numerous downy mildews that attack grapes or garden vegetables, and the once dreaded "rot" of potatoes {Phy- tophthora intestans) are among this group. The Ascomycetes, one of the largest classes of fungi, produce spores in a spore case called • AOOtdWA'. MOOaiSTOW^O OSHAV aafifT U. S. Dept. of Agric. Map showing spread of Dutch elm disease from July, 1933, to February, 1934. The black circles show centers of infection Stock Photo](https://c8.alamy.com/comp/RHJR6Y/biology-the-story-of-living-things-580-man-as-a-conqueror-called-quotdamping-offquot-which-attacks-seedlings-white-quotrustquot-the-brown-rot-of-lemons-numerous-downy-mildews-that-attack-grapes-or-garden-vegetables-and-the-once-dreaded-quotrotquot-of-potatoes-phy-tophthora-intestans-are-among-this-group-the-ascomycetes-one-of-the-largest-classes-of-fungi-produce-spores-in-a-spore-case-called-aootdwa-mooaistowo-oshav-aafift-u-s-dept-of-agric-map-showing-spread-of-dutch-elm-disease-from-july-1933-to-february-1934-the-black-circles-show-centers-of-infection-RHJR6Y.jpg ". Biology; the story of living things. 580 MAN AS A CONQUEROR called "damping off," which attacks seedlings, white "rust," the brown rot of lemons, numerous downy mildews that attack grapes or garden vegetables, and the once dreaded "rot" of potatoes {Phy- tophthora intestans) are among this group. The Ascomycetes, one of the largest classes of fungi, produce spores in a spore case called • AOOtdWA'. MOOaiSTOW^O OSHAV aafifT U. S. Dept. of Agric. Map showing spread of Dutch elm disease from July, 1933, to February, 1934. The black circles show centers of infection Stock Photo")
RMRHJR6Y–. Biology; the story of living things. 580 MAN AS A CONQUEROR called "damping off," which attacks seedlings, white "rust," the brown rot of lemons, numerous downy mildews that attack grapes or garden vegetables, and the once dreaded "rot" of potatoes {Phy- tophthora intestans) are among this group. The Ascomycetes, one of the largest classes of fungi, produce spores in a spore case called • AOOtdWA'. MOOaiSTOW^O OSHAV aafifT U. S. Dept. of Agric. Map showing spread of Dutch elm disease from July, 1933, to February, 1934. The black circles show centers of infection
RMRE37PR–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON EUBIACE^ 165 ^cidiospores. ^cidia hypophyllous, scattered or collected in orbicular clusters on roundish or oblong paler spots, shortly- cylindrical, with a short white recurved margin; spores globose or broadly ellipsoid, orange-yellow, somewhat smooth, 16—23/A. Uredospores. Sori hypophyllous, minute, roundish, on the stems linear, reddish-brown, often confluent; spores globose to ovate, aculeolate, pale-brown, 22—30 x 17—23 fi, with two or three germ-pores.. Fig. 115. P. punctata. Teleutospores; a, on Gf.
RMRH2XHT–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. I 10 UROMYCES clusters, cup-shaped, whitish-yellow, with ;i torn revolute margin; spores densely and minutely verruculusr, yellowish I 5 -21 /j. diani.. Fig. 62. U. Behenis. a, secidia on early leaf. 1>. secidia on later leaf, of S. in fid tn ; two teleutospores. Teleutospores. Sori hypophyllous and on the stems, often surrounding the secondary secidia, irregularly scattered, gre- garious or circinate, rounded or oblong, covered for a considerable time by the lead-coloured epidermis, rather
RMRE2G4C–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 348 MELAMPSOEA Teleutospores. Sori hypophyllous, subepidermal, scattered over the leaf singly and in groups, pulvinate, —f mm., blackish-brown, not shining; spores prismatic, rounded at both ends, 35—60 x 6—10 /i; epispore clear-brown, 1—1^ fi thick, scarcely thickened above, without evident germ-pore. Cseomata on Allium Cepa, A. ursinum and other species. May; uredo- and teleutospores on Populus nigra, P. balsami- fera. (Fig. 260.) The description is chiefly after Klebahn. The teleutospores mature in February
RMRH1GNM–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 344 MELAMPSORA Spermogones. stomata. jEcidiospores.. Fig. 259. M.Urrhidi- repeiitis. Cipoma on leaf of Listeia ovata, from one of Plowright's cul- tures (reduced). both ends, 16— thin (about 1 /j) Hardly projecting, flat, mostly under the CsE'omata irregular in outline, clustered or circinate on large pale-yellowish spots, often confluent, 1—2 mm. diam.: bright orange- yellow; spores roundish-polygonal, 11—20 x 11—15 yu; epispore very thin, delicately warted. Uredospores. Sori hypophyllous, minute, deep-orange,
RMRH2WM7–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON GENTIANA 179. Fig. 128. P. Gentianae. Teleutospore, mesospore, and medospore, on G. acaulis. aculeolate, brownish-yellow, 20—30 x 18—24 /x, with two, rarely three, germ-pores. Teleutospores. Sori similar and also on the stems, but pulverulent and black-brown ; spores ellipsoid to ovoid, rounded at both ends, not thickened above, but some- times with a low broad papilla, not constricted, smooth, dark- chestnut, 28—38 x 24—30 p; pedicels hyaline, thin, rather long, very deciduous; occa- sional
![. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. 318 PRACTICAL COURSE IN BOTANY. c^^'WjiB'ftp.pii iiur Fig. 452. — Uredo spores of wheat rust (Puccinia graminis), magnified. {From Coulter's "Plant Structures.") stage in the life cycle of the plant, and to this stage the old name uredo is applied, the spores being called uredo-spores. 360. Black rust. — Teleuto stage. Next examine with a lens a part of the plant attacked by black rust. Do you observe any difference ex- cept in the color? Do the two kinds of rust Stock Photo](https://c8.alamy.com/comp/RE2J62/a-practical-course-in-botany-with-especial-reference-to-its-bearings-on-agriculture-economics-and-sanitation-botany-318-practical-course-in-botany-cwjibftppii-iiur-fig-452-uredo-spores-of-wheat-rust-puccinia-graminis-magnified-from-coulters-quotplant-structuresquot-stage-in-the-life-cycle-of-the-plant-and-to-this-stage-the-old-name-uredo-is-applied-the-spores-being-called-uredo-spores-360-black-rust-teleuto-stage-next-examine-with-a-lens-a-part-of-the-plant-attacked-by-black-rust-do-you-observe-any-difference-ex-cept-in-the-color-do-the-two-kinds-of-rust-RE2J62.jpg ". A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. 318 PRACTICAL COURSE IN BOTANY. c^^'WjiB'ftp.pii iiur Fig. 452. — Uredo spores of wheat rust (Puccinia graminis), magnified. {From Coulter's "Plant Structures.") stage in the life cycle of the plant, and to this stage the old name uredo is applied, the spores being called uredo-spores. 360. Black rust. — Teleuto stage. Next examine with a lens a part of the plant attacked by black rust. Do you observe any difference ex- cept in the color? Do the two kinds of rust Stock Photo")
RMRE2J62–. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. 318 PRACTICAL COURSE IN BOTANY. c^^'WjiB'ftp.pii iiur Fig. 452. — Uredo spores of wheat rust (Puccinia graminis), magnified. {From Coulter's "Plant Structures.") stage in the life cycle of the plant, and to this stage the old name uredo is applied, the spores being called uredo-spores. 360. Black rust. — Teleuto stage. Next examine with a lens a part of the plant attacked by black rust. Do you observe any difference ex- cept in the color? Do the two kinds of rust
![. Complete farmer's guide. Agriculture; Farm life. [from old catalog]. PLANT ENEMIES 275 do not as a rule manufacture their own foods, and hence must take foods that other plants have made. In the case of the disease-producing fungi or bacteria, they take their food from the living plant, which they infect. A plant living thus on another plant is called a parasite * (par'a-sit),. Fig. 171. Wheat rust. A, summer spores or " red-rust " stage; B, spores germinating and penetrating the plant; C, late spores or " black-rust" stage. After Ferguson and Lewis. and the plant from wh Stock Photo](https://c8.alamy.com/comp/REDH0A/complete-farmers-guide-agriculture-farm-life-from-old-catalog-plant-enemies-275-do-not-as-a-rule-manufacture-their-own-foods-and-hence-must-take-foods-that-other-plants-have-made-in-the-case-of-the-disease-producing-fungi-or-bacteria-they-take-their-food-from-the-living-plant-which-they-infect-a-plant-living-thus-on-another-plant-is-called-a-parasite-para-sit-fig-171-wheat-rust-a-summer-spores-or-quot-red-rust-quot-stage-b-spores-germinating-and-penetrating-the-plant-c-late-spores-or-quot-black-rustquot-stage-after-ferguson-and-lewis-and-the-plant-from-wh-REDH0A.jpg ". Complete farmer's guide. Agriculture; Farm life. [from old catalog]. PLANT ENEMIES 275 do not as a rule manufacture their own foods, and hence must take foods that other plants have made. In the case of the disease-producing fungi or bacteria, they take their food from the living plant, which they infect. A plant living thus on another plant is called a parasite * (par'a-sit),. Fig. 171. Wheat rust. A, summer spores or " red-rust " stage; B, spores germinating and penetrating the plant; C, late spores or " black-rust" stage. After Ferguson and Lewis. and the plant from wh Stock Photo")
RMREDH0A–. Complete farmer's guide. Agriculture; Farm life. [from old catalog]. PLANT ENEMIES 275 do not as a rule manufacture their own foods, and hence must take foods that other plants have made. In the case of the disease-producing fungi or bacteria, they take their food from the living plant, which they infect. A plant living thus on another plant is called a parasite * (par'a-sit),. Fig. 171. Wheat rust. A, summer spores or " red-rust " stage; B, spores germinating and penetrating the plant; C, late spores or " black-rust" stage. After Ferguson and Lewis. and the plant from wh
RMRE3737–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON GRAMINE^ 283. Fig. 214. P. persistens. Teleutospores. Uredospores. Sori minute, roundish or elongated, orange, on yellowish spots; spores more or less globose, minutely echinulate, yellow, 25—30 fz. Teleutospores. Sori hypophyl- lous, minute, ovate, oblong or linear, black, long covered by the epidermis; spores clavate-oblong or irregular, rounded, truncate or obliquely attenuate above, slightly thickened (4—7 /a), more or less constricted, rounded or often tapering below, smooth, brown, 50—60 x 15—20 /i; pe
RMRE2G8X–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. COLEOSPOEIUM 327 (2) CoLEOSPORiUM Melampyri Karst. Uredo Melampyri Eebentisch, Flor. Neomaroli. p. 355. Coleosporium Melampyri Karst. Myo. Fenn. iv. 62. Fischer, Ured. Sohweiz, p. 440, f. 269. Peridermium Soraueri Kleb. Zeitschr. f. Pflanzenkr. iv. 194. The only apparent differences from G. Euphrasiae are in the size of the spores: uredospores 24—35 X 21-—28 ^i; teleutospores as much as 115/u, long, 21—28/x wide; epispore very thick (up to 28 yit) at the summit. .iEcidia on leaves of Pinus silvestris; uredo- an
RMRH2WRM–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON RUBIACE^ 165 ^cidiospores. ^cidia hypophyllous, scattered or collected in orbicular clusters on roundish or oblong paler spots, shortly cylindrical, with a short white recurved margin; spores globose or broadly ellipsoid, orange-yellow, somewhat smooth, 16—23/i. Uredospores. Sori hypophyllous, minute, roundish, on the stems linear, reddish-brown, often confluent; spores globose to ovate, aculeolate, pale-brown, 22—30 x 17—23/u-, with two or three germ-pores.. Fip. 11-5. p. punctata. Teleutospores; a, on G. s
RMRH2R4D–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. :*N2 11 KM 11.HI A ( >n leaves of Cattlei/a Duiciunn IIjit<-in., imported from Costa Rica, L899. (Fig. 285.) Only a small patch of IJust was present mi the leaf when the plant was received from Costa Rica, but this continued to increase in size and the tailing spores infected other leaves. The uredospores germinated readily, and young Cattleya leaves, inoculated on the under .surface, produced mature uredospores in thirteen days. No success attended the efforts to infect oilier orchids, n
RMRH2TFC–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON GRAM1NE.E 277 globose, aculeate, yellow-brown, 20—28x20—24 /j, ; epispore 3—6 fi thick, with three germ-pores. Teleutospores. Sori similar, often confluent and as much as 8 mm. long, conspicuous, pulvi- nate, black; spores ellipsoid, rounded at both ends, slightly thickened (up to 5 p) above, hardly constricted,smooth,brown, 32—46x20—30^; pedicels hya- line or yellowish, curved, per- sistent, rather thin, very long (as much as 120/i); a few mesospores sometimes intermixed. [JEcidia on Alelam
RMRH2X9F–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 126 UROMYCES Teleutospores. Sori generally hjpophyllous, similar to the uredo-sori but more often confluent, always covered by the epidermis, compact, shining, black; spores ovate- oblong, occasionally ellipsoid or pyri- forra, rounded above, rarely truncate, often slightly thickened (up to 4 /x), Fig. 77. U.DactyUdis. Te- smooth, yellow-brown, darker only leutospores and the accom- along the summit, 18—30 X 14— panying paraphyses. i i xi,- i j- i 20 /x ; epispore 1| /jl thick ; pedicels brownish, persistent, n
![. Plants; a text-book of botany. Botany. Fig. 50 —Wheat rust, ehowing a young hypha forcing its way from the surface of a leaf down among the nutritive cells.—After H. Maeshall Wakd. stage in a polymorphic life history it was called the Uredo- stage, and the spores uredosjiores, sometimes "summer spores."'. Fig. 51. Wheat rnst, showing the winter spores (teleutospores).- H. Marshall Ward. Toward the end of the summer the same mycelium develops sporophores which bear an entirely different kind of spore (Fig. 51). It is two-celled, with a very heavy black. Please note that these images Stock Photo](https://c8.alamy.com/comp/RDWAYR/plants-a-text-book-of-botany-botany-fig-50-wheat-rust-ehowing-a-young-hypha-forcing-its-way-from-the-surface-of-a-leaf-down-among-the-nutritive-cellsafter-h-maeshall-wakd-stage-in-a-polymorphic-life-history-it-was-called-the-uredo-stage-and-the-spores-uredosjiores-sometimes-quotsummer-sporesquot-fig-51-wheat-rnst-showing-the-winter-spores-teleutospores-h-marshall-ward-toward-the-end-of-the-summer-the-same-mycelium-develops-sporophores-which-bear-an-entirely-different-kind-of-spore-fig-51-it-is-two-celled-with-a-very-heavy-black-please-note-that-these-images-RDWAYR.jpg ". Plants; a text-book of botany. Botany. Fig. 50 —Wheat rust, ehowing a young hypha forcing its way from the surface of a leaf down among the nutritive cells.—After H. Maeshall Wakd. stage in a polymorphic life history it was called the Uredo- stage, and the spores uredosjiores, sometimes "summer spores."'. Fig. 51. Wheat rnst, showing the winter spores (teleutospores).- H. Marshall Ward. Toward the end of the summer the same mycelium develops sporophores which bear an entirely different kind of spore (Fig. 51). It is two-celled, with a very heavy black. Please note that these images Stock Photo")
RMRDWAYR–. Plants; a text-book of botany. Botany. Fig. 50 —Wheat rust, ehowing a young hypha forcing its way from the surface of a leaf down among the nutritive cells.—After H. Maeshall Wakd. stage in a polymorphic life history it was called the Uredo- stage, and the spores uredosjiores, sometimes "summer spores."'. Fig. 51. Wheat rnst, showing the winter spores (teleutospores).- H. Marshall Ward. Toward the end of the summer the same mycelium develops sporophores which bear an entirely different kind of spore (Fig. 51). It is two-celled, with a very heavy black. Please note that these images
RMRE37KC–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON GENTIANA 179. Fig. 128. P. Gentianae. Teleutospore, mesospore, and uredospore, on G. acaulis. aculeolate, brownish-yellow, 20—30 x 18—24 fi, with two, rarely three, germ-pores. Teleutospores. Sori similar and also on the stems, but pulverulent and black-brown; spores ellipsoid to ovoid, rounded at both ends, not thickened above, but some- times with a low broad papilla, not constricted, smooth, dark- chestnut, 28—38 X 24—30 fj,; pedicels hyaline, thin, rather long, very deciduous; occa- sionally there are a
RMRH2X26–. The British rust fungi (Uredinales), their biology and classification. Uredineae. Fig. 94. P. Cirsii. Teleuto- spores, on C. palustre, from Hereford. Fig. 95. P. Cirsii. Teleuto- spore and uredospore, on C. lanceolatum. Teleutospores. Sori mostly hypophyllous only, similar, but blackish-brown or black; spores ellipsoid or somewhat obovate, rounded at both ends, not thickened above, hardly constricted, verruculose or merely punctate, chestnut-brown, 25—38 x 17—25/1.; epispore thin; pedicels hyaline, very short. On Cirsium, Dupplin Castle, Perth (M. C. Cooke). On C. jDratense, Ballyquirke Lake
RMRDEXJA–. Minnesota plant diseases. Plant diseases. Fig. 74.—More spores of rust fungi. 1. A pycnidium (from wheat rust on barberry), a capsular spore-bearing fruiting body showing dust of spores at r. 2. Spores and spore-bearing threads from 1 greatly enlarged. 3. Same spores germinating. These spores are probably the relics of male reproductive cells which have fallen into disuse. They appear to be functionless since they do not usually germinate and have never been known to cause infection. 4. A cluster-cup of an Anemone rust; s spores, formed in chains; p, threads forming the cup of the cluster-cu
RMRDE295–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. Fig. 82.—Diagram (leit) of aacium (roestelia) of apple rust; right, three EEcio- spores from the cup highly magnified. (After Jones, L. R., and Bartholomew, E. T.. Bull. 257, Agric. Exp. Stat., Univ. Wise. July, ipiS-) minutely pitted and almost spheric with thick walls and granular con- tents. The first aecia (Figs. 81 and 82) become mature during the month of July and viable spores are produced in large numbers during this and the following two months (Fig. 83). This is the period of
RMRE37RW–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 158 PUCCINIA. Pig. 109. P. major. Te leutospore, on G. palu Uredospores. Sori amphigenous, solitary, minute, cinnamon; spores subglobose to ovoid, distinctly echinulate, brownish, 24—30 x 21— 26/x. Teleutospores. Sori chiefly hypo- phyllous, similar, but blackish-brown, standing singly, scattered over nearly the whole leaf-surface; spores ellipsoid to ovoid, rounded at both ends, not thickened above, hardly constricted, very delicately verruculose, chestnut- (Zosa; a, seeidia on leaf of r, oo ao v, oo oa . '' s
![. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON GRAMINE.E 277 globose, aculeate, yellow-brown, 20—28x20—24 yu.; epispore 3—6 fjL thick, with three germ-pores. Teleutospores. Sori similar, often confluent and as much as 8 mm. long, conspicuous, pulvi- nate, black; spores elli])soid, rounded at both ends, slightly thickened (up to 5 jx) above, hardly constricted,smooth,brown, 32—46x20—30/x; pedicels hya- line or yellowish, curved, per- sistent, rather thin, very long (as much as 120/i); a few mesospores sometimes intermixed. [^cidia on Melanipyrum spp.J; ur Stock Photo](https://c8.alamy.com/comp/RH2TER/the-british-rust-fungi-uredinales-their-biology-and-classification-uredineae-on-graminee-277-globose-aculeate-yellow-brown-2028x2024-yu-epispore-36-fjl-thick-with-three-germ-pores-teleutospores-sori-similar-often-confluent-and-as-much-as-8-mm-long-conspicuous-pulvi-nate-black-spores-elli-soid-rounded-at-both-ends-slightly-thickened-up-to-5-jx-above-hardly-constrictedsmoothbrown-3246x2030x-pedicels-hya-line-or-yellowish-curved-per-sistent-rather-thin-very-long-as-much-as-120i-a-few-mesospores-sometimes-intermixed-cidia-on-melanipyrum-sppj-ur-RH2TER.jpg ". The British rust fungi (Uredinales), their biology and classification. Uredineae. ON GRAMINE.E 277 globose, aculeate, yellow-brown, 20—28x20—24 yu.; epispore 3—6 fjL thick, with three germ-pores. Teleutospores. Sori similar, often confluent and as much as 8 mm. long, conspicuous, pulvi- nate, black; spores elli])soid, rounded at both ends, slightly thickened (up to 5 jx) above, hardly constricted,smooth,brown, 32—46x20—30/x; pedicels hya- line or yellowish, curved, per- sistent, rather thin, very long (as much as 120/i); a few mesospores sometimes intermixed. [^cidia on Melanipyrum spp.J; ur Stock Photo")
RMRH2TER–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON GRAMINE.E 277 globose, aculeate, yellow-brown, 20—28x20—24 yu.; epispore 3—6 fjL thick, with three germ-pores. Teleutospores. Sori similar, often confluent and as much as 8 mm. long, conspicuous, pulvi- nate, black; spores elli])soid, rounded at both ends, slightly thickened (up to 5 jx) above, hardly constricted,smooth,brown, 32—46x20—30/x; pedicels hya- line or yellowish, curved, per- sistent, rather thin, very long (as much as 120/i); a few mesospores sometimes intermixed. [^cidia on Melanipyrum spp.J; ur
RMRH1H82–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON POLYGONACE^E 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. riviparum issued by Fuckel (see Symb. Myc. p. 57). It is a purely Alpine species. 97. Puccinia Polygoni-amphibii Pers. JEcidium Geranii DC. ; Cooke, Handb. p. 543; Micr. Fung. p. 199 p.p.;(?). JE. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Polygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasi
RMRH2WM5–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON LABIATE 175 met with, viz. spores with three or more cells variously arranged. See Grove, Gardener's Chronicle, xxiv (1885), p. 180, f. 38. The mycelium is probably perennial. Distribution : Central and Western Europe. 47. Puccinia annularis Schlecht. Uredo annularis Strauss in Wetter. Ann. ii. 106. Puccinia anmdaris Schlecht. Flor. Berol. ii. 132 (1824). Plowr. Ured. p. 217. Sacc. Syll. vii. 689. Sydow, Monogr. i. 300. Fischer, Ured. Schweiz, p. 329, f. 240. P. Scorodoniae Link. Spec. ii. 72 (1825). Cooke,
RMRE2G4N–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 344 MELAMPSOEA Spermogones. stomata. ^cidiospores. Hardly projecting, flat, mostly under the. Fig. 259. M. Orrlndi- repentis. Ca?oma on leaf of Listera ovata, from one ol Plowright's cul- tures (reduced). Cseomata irregular in outline, clustered or circinate on large pale-yellowish spots, often confluent, 1—2 mm. diam.; bright orange- yellow; spores roundish-polygonal, 11—20 x 11—15/a; epispore very thin, delicately warted. Uredospores. Sori hypophyllous, minute, deep-orange, causing yellow spots on the upper s
RMRDD86G–. Minnesota mushrooms ... Botany; Mushrooms. Figure 38. Naucori. pediades Galera lateritia Cone Galera C a p 2-3 cm. wide, yellowish to tan or darker, thin, smooth, slightly striate when moist, narrowly and persistently conical, or finally somewhat bell-shaped; stem 8-10 cm. by 2-3 mm., whitish, white-powdered, hollow; gills adnexed or seemingly free, brown, very narrowly linear, crowded; spores brownish, rust- colored, elliptic, 12-14 X S-lO/x. The name refers to the color. On dung and among grasses, spring to frost: well-flavored and delicate.. Please note that these images are extracted fr
RMRH2T6X–. The British rust fungi (Uredinales), their biology and classification. Uredineae. PHRAGMIDIUM 297 7. Phragmidium Rubi Wint. Puecinia mucronata var. Ruhi Pers. Disp. Meth. p. 38. Phragmidiv.m Ruhi Wint. Pilze, p. 230. Plowr. Ured. p. 224. Fischer, Ured. Schweiz, p. 418, f. 290. Sacc. Syll. vii. 745 p.p. Sjdow, Monos;r. iii. 141. Spermogones. Epiphyllous, in minute clusters. /Ecidiospores. Ca-omuta hypophyllous, roundish, nerves elongated, often in little groups,surrounded by clavate para- physes; spores resembling those of P. violaceunt. Sori hypophyl- spores smaller violaceuni. Sori small, o
RMRE2G3N–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 362 MELAMPSOEA Spermogones. Epiphyllous, or a few hypophyllous, in large round clusters, honey-coloured. jEcidiospores. Cseomata hypophyllous and on the petioles and stems, in clusters on pale-yellow spots, often circinate round the spermogones, about 1 mm. wide, often confluent in patches 1—1|^ cm. wide, bright-orange; spores roundish-poly- gonal or oval, 13—18x12—16/a; epispore 1—1^/x thick, finely and densely verruculose.. Fig. 263. M. Eostrvpii. u, teleutospores on P. tremula; b, teleutospore on P. alba; v,
RMRH2R3Y–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. UREDO 385 producing its spores in the following spring. The fungus is recorded also on 11. ferrugineum and R. dahuricum, but does not attack the American or Himalayan species. DISTRIBUTION: Central Europe, Siberia. Uredo Lynchii Plowr. Trichobasis Lynchii Berk, in Gard. Chron. 1877, viii. 242. Berk, et Br. Ann. Nat. Hist. 1878, ser. 5, i. 26. W. G. Smith in Gard. Chron. 1885, xxiii. 603, f. 154. Uredo Lynchii Plowr. Ured. p. 259. Sacc. Syll. vii. 852. Uredospores. Sori subepidermal, erurapent,
RMRE2J88–. Elements of botany. Botany. TYPES OF CRYPTOGAMS; THALLOPHY'TES 225 of grasses, and many species of such rusts are recognized. A rust may have one, two, or three kinds of spores, and when three occur one is known as tlie clustef-cup slage and tlie others as red rust and hlack rust, according to tlie usual approximate color of the spores.. A B Fig. 160. Spore-Forraation in Potato-Blight {Phytophihora infestans). A a well-developed ,i:^roup of stalks, proceeding from a mass of mycelium inside the leaf and escaping through a stoma; B,a young, unbranched stalk, h, hyphpe of mycelium; o, stoma; s,
![. Insects affecting vegetables [microform]. Légumes; Vegetables; Insect pests; Insectes nuisibles. .Slk.>«l. tt.«bd Tissua .5.«A t«*JCod Fig. 49. Bean Anthracnose. The right-hand figure shows a section taken through a spot on pod and the seed beneath. Note how the hyphae in the "pod-spot" are penetrating into the cells of the seed. On the left are shown a number of enlarged spores.—(After Whetzel.) except on large r ;. Dusting with flowers of sulphur has given good results. Cutting and burning all the diseased stems in the fall will help to keep the rust in check. Rust resistant v Stock Photo](https://c8.alamy.com/comp/REN474/insects-affecting-vegetables-microform-lgumes-vegetables-insect-pests-insectes-nuisibles-slkgtl-ttbd-tissua-5a-tjcod-fig-49-bean-anthracnose-the-right-hand-figure-shows-a-section-taken-through-a-spot-on-pod-and-the-seed-beneath-note-how-the-hyphae-in-the-quotpod-spotquot-are-penetrating-into-the-cells-of-the-seed-on-the-left-are-shown-a-number-of-enlarged-sporesafter-whetzel-except-on-large-r-dusting-with-flowers-of-sulphur-has-given-good-results-cutting-and-burning-all-the-diseased-stems-in-the-fall-will-help-to-keep-the-rust-in-check-rust-resistant-v-REN474.jpg ". Insects affecting vegetables [microform]. Légumes; Vegetables; Insect pests; Insectes nuisibles. .Slk.>«l. tt.«bd Tissua .5.«A t«*JCod Fig. 49. Bean Anthracnose. The right-hand figure shows a section taken through a spot on pod and the seed beneath. Note how the hyphae in the "pod-spot" are penetrating into the cells of the seed. On the left are shown a number of enlarged spores.—(After Whetzel.) except on large r ;. Dusting with flowers of sulphur has given good results. Cutting and burning all the diseased stems in the fall will help to keep the rust in check. Rust resistant v Stock Photo")
RMREN474–. Insects affecting vegetables [microform]. Légumes; Vegetables; Insect pests; Insectes nuisibles. .Slk.>«l. tt.«bd Tissua .5.«A t«*JCod Fig. 49. Bean Anthracnose. The right-hand figure shows a section taken through a spot on pod and the seed beneath. Note how the hyphae in the "pod-spot" are penetrating into the cells of the seed. On the left are shown a number of enlarged spores.—(After Whetzel.) except on large r ;. Dusting with flowers of sulphur has given good results. Cutting and burning all the diseased stems in the fall will help to keep the rust in check. Rust resistant v
RMRH2X5Y–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 134 PUCCINIA 6. Puccinia Absinthii DC. Trichohasis Artemisiae Berk. ; Cooke, Micr. Fung. p. 223. Puccinia Discoidearum Link ; Cooke, Micr. Fung. p. 206. P. Tanaceti Plowr. Ured. p. 189 p.p. Sacc. Syll. vii. 637 p.p. P. Absinthii DC. Flor. fr. vi. 56. Sydow, Monogr. i. 11. Fischer, Ured. Schweiz, p. 188, f. 148. Uredospores. Sori generally hypophyllous, on yellowish- brown or indeterminate spots, scattered or aggregated, not confluent, minute, roundish, pulverulent, pale-brown; spores globose to ovoid, echinulat
RMRE371C–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. PHRAGMIDIUM 297 7. Phragmidium Rubi Wint. Puccinia mucronata var. Rubi Pers. Disp. Meth. p. 38. Phragmidiv.m Rubi Wint. Pilze, p. 230. Plowr. Ured. p. 224. Fischer, Ured. Schweiz, p. 418, f. 290. Saco. Syll. vii. 745 p.p. Sydow, Monogr. iii. 141. Spermogones. Epiphyllous, in minute clusters. JEcidiospores. CEBomata hypophyllous, roundish, or on the nerves elongated, often in little groups,surrounded byclavate para- physes; spores resembling those of P violaceum. Sori hypophyl- spores smaller violaceum. Sori sma
RMRH2RJR–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 340 MELAMPSORA pores paraphyses capitate with a slender pedicel, thickened (up to 8 p) above, 50—70 x 18—25 p. Tr/cutusjxires. Sori hypophyllous, covered liy the epidermis, small, about h mm, diam., but united into groups bounded by the veins, brown with a tinge of bluish-grey; spots brown on the upper surface; spores irregularly pris- matic, rounded at both ends, 25—40 x 7—13 p,; epispore thin, clear-brown, scarcely thickened above, with a barely perceptible apical germ-pore. Cseomata on Euony
RMRE379J–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON POLYGONACEjE 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. viviparum issued by Fuckel (see Symb. Myc. p. 57). It is a purely Alpine species. 97. Puccinia Polygoni-amphibii Pers. JScidium Oeranii DC. ; Oooke, Handb. p. 543 ; Micr. Fung. p. 199 p.p.(?). jE. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Polygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasis Polygonorum Ber
RMRH2XGW–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. I 12 UROMYCES /Eddiospores. .Kcidia amphigenous, clustered in circles 5— l x 1(5—21 /x: epispore about 1 fx thick. Teleutospores. Sori amphigenous but mostly cauline, on the leaves rounded and 1—3 mm. diam.. on the stems lanceolate and even as much as 3 cm. long (Sydow), thick, compact, dark-brown; spores vei variable, oval to subpyriform, rounded or subcorneal at the apex, thickened or not, smooth, brown, 24—35x18—20//,; pedicels pale-brown, persistent, up to 80 /x long or more.. Fig. 64.
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ION CTROMYCES see Bot. Zeit. Ixiii. 75), thai an sscidium which he finds on R. Ficaria is connected with U. Ruvnicis (q.v. Tlie spores of U. Ficariae and U. Rumicis are very similar. I >istribution : Europe generally, except the extreme South. 21. Uromyces caryophyllinus Wint. Lycoperdon caryophyllinum Schrank, Baier. Flor. ii. fin's. Uromyces caryophyllinus Winter, Filzc p. L49. Sacc. Syll. vii. .">4.>. Sydow, Monogr. ii. 210, 362. Fischer, Ured. Schweiz, p. 11, f. 10. Trans. Br Stock Photo](https://c8.alamy.com/comp/RH2XJB/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-ion-ctromyces-see-bot-zeit-ixiii-75-thai-an-sscidium-which-he-finds-on-r-ficaria-is-connected-with-u-ruvnicis-qv-tlie-spores-of-u-ficariae-and-u-rumicis-are-very-similar-i-gtistribution-europe-generally-except-the-extreme-south-21-uromyces-caryophyllinus-wint-lycoperdon-caryophyllinum-schrank-baier-flor-ii-fins-uromyces-caryophyllinus-winter-filzc-p-l49-sacc-syll-vii-quotgt4gt-sydow-monogr-ii-210-362-fischer-ured-schweiz-p-11-f-10-trans-br-RH2XJB.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ION CTROMYCES see Bot. Zeit. Ixiii. 75), thai an sscidium which he finds on R. Ficaria is connected with U. Ruvnicis (q.v. Tlie spores of U. Ficariae and U. Rumicis are very similar. I >istribution : Europe generally, except the extreme South. 21. Uromyces caryophyllinus Wint. Lycoperdon caryophyllinum Schrank, Baier. Flor. ii. fin's. Uromyces caryophyllinus Winter, Filzc p. L49. Sacc. Syll. vii. .">4.>. Sydow, Monogr. ii. 210, 362. Fischer, Ured. Schweiz, p. 11, f. 10. Trans. Br Stock Photo")
RMRH2XJB–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ION CTROMYCES see Bot. Zeit. Ixiii. 75), thai an sscidium which he finds on R. Ficaria is connected with U. Ruvnicis (q.v. Tlie spores of U. Ficariae and U. Rumicis are very similar. I >istribution : Europe generally, except the extreme South. 21. Uromyces caryophyllinus Wint. Lycoperdon caryophyllinum Schrank, Baier. Flor. ii. fin's. Uromyces caryophyllinus Winter, Filzc p. L49. Sacc. Syll. vii. .">4.>. Sydow, Monogr. ii. 210, 362. Fischer, Ured. Schweiz, p. 11, f. 10. Trans. Br
RMRE2FX4–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. UREDO 385 producing its spores in the following spring. The fungus is recorded also on R. ferrugineiim and R. dahuricx{,m, but does not attack the American or Himalayan species. DiSTEiBUTlON: Central Europe, Siberia. Uredo Iiynchii Plowr. Trichobads Lynchii Berk, in Gard. Ghron. 1877, viii. 242. Berk, et Br. Ann. Nat. Hist. 1878, ser. 5, i. 26. W. G. Smith in Gard. Chron. 1885, xxiii. 693, f. 154. Uredo Lyiiehii Plowr. Ured. p. 259. Saoc. Syll. vii. 852. Uredospores. Sori subepidermal, erumpent, on small pallid
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 3X QYMNOSPOEANGIUM JEcidiospores. zEcidia hypophyllous, in irregular or circular groups, horn-shaped, conical, curved, .1 nun. wide, 2 nun. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or 'xli red on the upper side; spores finely verruculose, brown, 21—28x19—24/^; Pig. 233. G. Juniperi. germ-pores 8—10, scattered. Groups of reculia on leaflet ° J of Mountain Ash xih; Teleutospores. Spore-masses on "•:m anopened perid Stock Photo](https://c8.alamy.com/comp/RH2T3G/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-3x-qymnospoeangium-jecidiospores-zecidia-hypophyllous-in-irregular-or-circular-groups-horn-shaped-conical-curved-1-nun-wide-2-nun-long-at-length-open-and-fimbriate-above-yellowish-brown-on-round-spots-which-are-brownish-below-and-bright-orange-or-xli-red-on-the-upper-side-spores-finely-verruculose-brown-2128x1924-pig-233-g-juniperi-germ-pores-810-scattered-groups-of-reculia-on-leaflet-j-of-mountain-ash-xih-teleutospores-spore-masses-on-quotm-anopened-perid-RH2T3G.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 3X QYMNOSPOEANGIUM JEcidiospores. zEcidia hypophyllous, in irregular or circular groups, horn-shaped, conical, curved, .1 nun. wide, 2 nun. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or 'xli red on the upper side; spores finely verruculose, brown, 21—28x19—24/^; Pig. 233. G. Juniperi. germ-pores 8—10, scattered. Groups of reculia on leaflet ° J of Mountain Ash xih; Teleutospores. Spore-masses on "•:m anopened perid Stock Photo")
RMRH2T3G–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 3X QYMNOSPOEANGIUM JEcidiospores. zEcidia hypophyllous, in irregular or circular groups, horn-shaped, conical, curved, .1 nun. wide, 2 nun. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or 'xli red on the upper side; spores finely verruculose, brown, 21—28x19—24/^; Pig. 233. G. Juniperi. germ-pores 8—10, scattered. Groups of reculia on leaflet ° J of Mountain Ash xih; Teleutospores. Spore-masses on "•:m anopened perid
RMRH1HJC–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 208 PUCCINIA P. Prtmi DC. Flor. fr. ii. 222 (1805). Plowr. Ured. p. 192. Sacc. Syll. vii. 648. P. Prunorum Link, Sp. PI. ii. 82 (1825). Cooke, Hanclb. p. 507 ; Micr. Fung. p. 211 ; Grevillea, iii. pi. 49, f. 11. Tranzschelia punctata Arthur, North Americ. Fl. vii. 151. tiperiaogones. Amphigenous, scattered, brown or blackish, very shallow, punctiform. JEcidiospores. ^cidia hypophyllous, scattered over the whole surface, flat, with a broad revolute margin which is torn into few (3—5) lobes; spores roundish, pale
RMRE3873–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 90 UROMYCES have occurred for many years consecutively on Thrift in my garden, I have never noticed the gecidia ; the uredospores last through the winter on the evergreen loaves, and reproduce the fungus about June ; teleuto- spores are rather scarce. Distribution : Central and North-Western Europe. 5. Uromyces Trifolii Lev. Puccinia Trifolii Hedw. f. in DC. Flor. fr. ii. 225. Oromyces Trifolii Lev. Ann. Sci. Nat. ser. 3, viii. 371. Plowr. Ured. p. 124 p.p. Sacc. Syll. vii. 534 p.p. Sydow, Monogr. ii. 132. Fisc
RMRH1JB8–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. Fig. 27. P. Poarum. An recidio- spore germinating on leaf of Poa annua. x 180.. Fig. 26. P. Poarum. Vertical section through edge of aecidium; showing a, the crushed cells of the upper myce- lium, pushed on one side ; b, the chain of peridium-cells; c, the spore bed, giving rise to d, the chains of a?cidio- spores. x 600. The black dots are the nucleoli; one aecidiospore-inother- cell has three nuclei. case in most of the higher forms of the Uredinales, arises deep Fig. 28. p. Poarum. o.ansecid
RMRH1GKE–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 352 MELAMPSORA ^permogones. Epiphyllous, or a few hypophj'llous, in large round clusters, honej-coloured. jEcidiuspores. Caeomata hypophyllous and on the petioles and stems, in clusters on pale-yellow spots, often circinate round the spermogones, about 1 mm. wide, often confluent in patches 1—1|-cm. wide, bright-orange ; spores roundish-poly- gonal or oval, 13—18x12—16/x; epispore 1—l^i^ yu. thick, finely and densely verruculose.. Fig. 263. M. liostrupii. a, teleutospores on P. tremula ; h, teleutospore on P. a
RMRH2X42–. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON COMPOSIT.*: 139 12. Puccinia tinctoriae Magn. Fuccinia Vompositarma var. Serratulae Cooke, Exsicc. no. 33. P. tinctoriae Magn. in Abhand. Nat. Gesell. Niirnberg, 1900, xiii. 37 ; Ber. deutsch. Bot. Gesell. 1893, pi. 21, f. 27—8. Sydow, Monogr. i. 150, f. 127. Uredospores. Sori amphigenous, on inconspicuous pallid spots, scattered, minute, roundish, pulverulent, dark-cinnamon; spores globose to ellipsoid, echinulate, brown, 24—40x 19—26/u.; epispore with two germ-pores towards the summit.. Fig. 91. P. tinctor
![. The British rust fungi (Uredinales), their biology and classification. Uredineae. 308 GYMNOSPORANGIUM j^cidiuspores. yEcidia hypophylloiis, in irregular or circular groups, horn-shaped, conical, curved, ^ mm. wide, 2 mm. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or red on the upper side; spores finely verruculose, brown, 21â28x19â24/z; ^^P.- 233. G Juniperi germ-pores 8â10, scattered. Groups 01 fficidia on leaflet " 'â of Mountain Ash x li; Teleutospoves. Spore-masses on a, an unopened peridium , ⢠n â n â , , Stock Photo](https://c8.alamy.com/comp/RH2T2Y/the-british-rust-fungi-uredinales-their-biology-and-classification-uredineae-308-gymnosporangium-jcidiuspores-yecidia-hypophylloiis-in-irregular-or-circular-groups-horn-shaped-conical-curved-mm-wide-2-mm-long-at-length-open-and-fimbriate-above-yellowish-brown-on-round-spots-which-are-brownish-below-and-bright-orange-or-red-on-the-upper-side-spores-finely-verruculose-brown-2128x1924z-p-233-g-juniperi-germ-pores-810-scattered-groups-01-fficidia-on-leaflet-quot-of-mountain-ash-x-li-teleutospoves-spore-masses-on-a-an-unopened-peridium-n-n-RH2T2Y.jpg ". The British rust fungi (Uredinales), their biology and classification. Uredineae. 308 GYMNOSPORANGIUM j^cidiuspores. yEcidia hypophylloiis, in irregular or circular groups, horn-shaped, conical, curved, ^ mm. wide, 2 mm. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or red on the upper side; spores finely verruculose, brown, 21â28x19â24/z; ^^P.- 233. G Juniperi germ-pores 8â10, scattered. Groups 01 fficidia on leaflet " 'â of Mountain Ash x li; Teleutospoves. Spore-masses on a, an unopened peridium , ⢠n â n â , , Stock Photo")
RMRH2T2Y–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 308 GYMNOSPORANGIUM j^cidiuspores. yEcidia hypophylloiis, in irregular or circular groups, horn-shaped, conical, curved, ^ mm. wide, 2 mm. long, at length open and fimbriate above, yellowish- brown, on round spots which are brownish below, and bright-orange or red on the upper side; spores finely verruculose, brown, 21â28x19â24/z; ^^P.- 233. G Juniperi germ-pores 8â10, scattered. Groups 01 fficidia on leaflet " 'â of Mountain Ash x li; Teleutospoves. Spore-masses on a, an unopened peridium , ⢠n â n â , ,
RMRDE614–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 373 U. fabae (Pers.) De B.^^ This is an autcecious eu-type which causes a rust of the broad bean, vetches, peas. U. trifolii (Hed.) Lev.^i-^^s An autcecious eu-type. I. Mcia, m circular clusters, on pallid spots. Peridia shortly cylindric, flattish, on the stems in elongated groups; edges whit- ish, torn. Spores subglobose or irregular, finely verrucose, pale- orange, 14-23 n in diameter. II. Uredinia pale-brown, rounded, scattered, surrounded by the. Fig. 269.—Uromycea appen- diculatus, teliospo
RMRH93GD–. Botany for high schools. Botany. Cluster-cup stage of wheat rust. Fig. 246. Single spot, show- ing cluster cups enlarged. Fig. 247. Two cluster cups more en- larged, showing split margin. spermogonia in a gelat- inous mass, sweetish to the taste. Fertilization takes place by the fusion of two cells in adjacent rows at the bottom of the young cluster cup in some cases, and by the migra- tion of a nucleus from a basal cell into the one above, or laterally situ- ated in other cases. The cluster-cup spores develop in chains from this, each having two nuclei which do not fuse until the final stag
RMRH1HJ1–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. â 212 PUCCINIA. 82. Puccinia Ribis 1 ><'. Flor. IV. ii. 221. Gard. Chron. 1894, xvi. L35. Trans. Brit. Myc. Soc. i. 57. Sacc. Syll vii. 679. Sydow, Mqnogr. i. 496. Teleutospores. Sori epiphyllous, orbicular, surrounded by a discoloured yellow zone, circulate and often confluent, pulverulent, rich chestnut-brown; spores oval or oblong, rounded above and be- low, apex thickened slightly and hooded, hardly constricted, verru- culose or rather punctate, chest- nut-brown, 20â30 x 15â20/a; pedi
RMRH2X7K–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 134 PUCCINI A (5. Puccinia Absinthii DC. Trichobasis Artemisiae Berk. ; Cooke, Micr. Fung. p. 223. Puccinia Discoideamm Link ; Cooke, Micr. Fung. p. 206. /'. Tanaceti Plowr. Ored. p. Is'-' p.p. Sacc. Syll. vii. 637 p.p. /'. Absinthii DC. Flor. fr. vi. 56. Sydow, Monogr. i. 11. Fischer, Ured. Schweiz, p. 188, f. 148. Uredospores. Sori generally hypophyllous, on yellowish- brown or indeterminate spots, scattered or aggregated, not confluent, minute, roundish, pulverulent, pale-brown; spores globo
RMRH1GJ7–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 356 MELAMPSORA /. ythea Lini Berk.; Cooke, Eandb. p. 532; Micr. Fung. p. 222, pi. 8, f. l(>7. McAlpiue, Rusts of Australia, p. L92, f. 236 and pi. I. i. 36. Spermogones ) ^ ^^ mcidiospores J Uredosji<u-r.--. Sori amphigenous and on the stems, small, scattered, roundish or oblong, flatly pulvinate, subepidermal, (?at first covered by a parenchymatous peridium, Fischer), orange; spores roundish to ellipsoid, echinulate, orange-yellow, 16—24 x 12—17 /Lt; paraphyses not numerous, hyaline, str
RMRH1GHR–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 356 MELAMPSORA Lecythea Lini Berk. ; Cooke, Handb. p. 532 ; Micr. Fung. p. 222, pi. 8, f. 165—7. Melampsora Lini Desm. PL Crypt, no. 2049. Plowr. Ured. p. 237. Sacc. Syll. vii. 588. Fischer, Ured. Schweiz, p. 507. McAlpine, Rusts of Australia, p. 192, f. 236 and pi. I, f. 36. See below. Spermogones jEcidiospores Uredospores. Sori amphigenous and on the stems, small, scattered, roundish or oblong, flatly pulvinate, subepidermal, (<'at first covered by a parenchymatous peridium, Fischer), orange; spores roundi
RMRH1GKT–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 352 MELAMPSOB Spermogones. Epiphyllous, or a few hypophyllous, in large round clusters, honey-coloured. /Eddiuspores. Cseomata hypophyllous and on the petioles and stems, in clusters on pale-yellow spots, often circinate round the spermogones, about 1 mm. wide, often confluent in patches 1—H cm. wide, bright-orange; spores roundish-poly- gonal or oval, 13—18x12—10/x: epispore 1—H n thick, finely and densely verruculose.. Fig. 263. M. Rostrupii. a, teleutospores on P. tremula ; b, teleutospore
RMRH1HGX–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 212 PUCCINIA. 82. Puccinia Ribis DC. Puceinia Ribis DC. Flor. fr. ii. 221. Gard. Chron. 1894, xvi. 135. Trans. Brit. Myc. Soc. i. 57. Sacc. Syll. vii. 679. Sydow, Monogr. i. 496. Teleutospores. Sori epiphyllous, orbicular, surrounded by a discoloured yellow zone, circinate and often confluent, pulverulent, rich chestnut-brown ; spores oval or oblong, rounded above and be- low, apex thickened slightly and hooded, hardly constricted, verru- culose or rather punctate, chest- nut-brown, 20—30 X 15—20 fi; pedicels h
RMRMAR2D–. Annual report. New York State Museum; Science -- New York (State); Plants -- New York (State); Animals -- New York (State). Fig. 137. Cecidomyia sp. on Crataegus, 32727. (Original) Irregular twig swelling, resembling black knot of plum but with bright red spores, length 1-2 cm, on C. o x y c a n t h a. Fungus. Cedar rust, Gymnosporangium globosum. 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.. New York State Museum; Univ
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 154 PUCCINIA 28. Puccinia Taraxaci P],owr. Puccinia Phaseoli var. Taraxaci Eebent. Fl. Neomaroh. p. 356. P. variabilis Grev. ; Cooke, Handb. p. 500; Micr. Fung. p. 207 p.p. P. Taraxaci Plowr. Ured. p. 186. Sacc. Syll. ix. 305. Sydow, Monogr. i. 164. Fischer, Ured. Schweiz, p. 226, f. 178. Spermogones. In little yellow roundish clusters. Vredospores. Sori amphigenous, with or without spots, scattered, minute, sometimes confluent and larger, roundish or oblong, pulverulent, brown; spores glo- bose to ovate, echin Stock Photo](https://c8.alamy.com/comp/RE37TW/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-154-puccinia-28-puccinia-taraxaci-p-owr-puccinia-phaseoli-var-taraxaci-eebent-fl-neomaroh-p-356-p-variabilis-grev-cooke-handb-p-500-micr-fung-p-207-pp-p-taraxaci-plowr-ured-p-186-sacc-syll-ix-305-sydow-monogr-i-164-fischer-ured-schweiz-p-226-f-178-spermogones-in-little-yellow-roundish-clusters-vredospores-sori-amphigenous-with-or-without-spots-scattered-minute-sometimes-confluent-and-larger-roundish-or-oblong-pulverulent-brown-spores-glo-bose-to-ovate-echin-RE37TW.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi. 154 PUCCINIA 28. Puccinia Taraxaci P],owr. Puccinia Phaseoli var. Taraxaci Eebent. Fl. Neomaroh. p. 356. P. variabilis Grev. ; Cooke, Handb. p. 500; Micr. Fung. p. 207 p.p. P. Taraxaci Plowr. Ured. p. 186. Sacc. Syll. ix. 305. Sydow, Monogr. i. 164. Fischer, Ured. Schweiz, p. 226, f. 178. Spermogones. In little yellow roundish clusters. Vredospores. Sori amphigenous, with or without spots, scattered, minute, sometimes confluent and larger, roundish or oblong, pulverulent, brown; spores glo- bose to ovate, echin Stock Photo")
RMRE37TW–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 154 PUCCINIA 28. Puccinia Taraxaci P],owr. Puccinia Phaseoli var. Taraxaci Eebent. Fl. Neomaroh. p. 356. P. variabilis Grev. ; Cooke, Handb. p. 500; Micr. Fung. p. 207 p.p. P. Taraxaci Plowr. Ured. p. 186. Sacc. Syll. ix. 305. Sydow, Monogr. i. 164. Fischer, Ured. Schweiz, p. 226, f. 178. Spermogones. In little yellow roundish clusters. Vredospores. Sori amphigenous, with or without spots, scattered, minute, sometimes confluent and larger, roundish or oblong, pulverulent, brown; spores glo- bose to ovate, echin
RMRH2WXY–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 154 PUCCINIA 28. Puccinia Taraxaci Plowr. Fuccinia Phaseoli var. Taraxaci Rebent. Fl. Neomarch. p. 356. P. variabilis Grev. ; Cooke, Handb. p. 500 ; Micr. Fung. p. 207 p.p. P. Taraxaci Plowr. Ured. p. 186. Sacc. Syll. ix. 305. Sydow, Monogr. i. 164. Fischer, Ured. Schweiz, p. 226, f. 178. Spermogones. In little yellow roundish clusters. Uredospores. Sori araphigenous, with or without spots, scattered, minute, sometimes confluent and larger, roundish or oblong, pulverulent, brown; spores glo- bose to ovate, echi
RMRE37EX–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 196 PUCCINIA Semadeni showed that the spores from A. silvestris infected M. odorata readily (Centralbl. f. Bakt. pt. 2, xiii. 217â9), but whether the form on G. temvlum belongs to the same species (or is a biological race of it) seems at present to be undetermined. Distribution : Central and Northern Europe, Siberia. 68. Puccinia Conii Fckl. Uredo Conii Strauss in Wetter. Ann. ii. 96. Trichohasis Conii Cooke, Micr. Fung. p. 225. T. Umhellatarum L^v. ; Cooke, Micr. Fung. p. 225 p.p. Puccinia Conii Fckl. Symb. My
![. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 22 BULLETIN 1186, U. S. DEPARTMENT OF AGRICULTURE. fatally attacked at Murthly Castle, Scotland, in 1893, although no record of the occurrence was published until 1898 {26). The rust so badly damaged and disfigured the beautiful ornamental specimens. Fig. 12.—Interior view of a white-pine plantation in Barley Wood, near Oxford, Eng- land, in which 84 per cent of the trees are in a dead or dying condition. Every tree shown is diseased, and the tree in the foreground produced spores on Stock Photo](https://c8.alamy.com/comp/RG894G/bulletins-on-forest-pathology-from-bulletin-usda-washington-dc-1913-1925-trees-plant-diseases-22-bulletin-1186-u-s-department-of-agriculture-fatally-attacked-at-murthly-castle-scotland-in-1893-although-no-record-of-the-occurrence-was-published-until-1898-26-the-rust-so-badly-damaged-and-disfigured-the-beautiful-ornamental-specimens-fig-12interior-view-of-a-white-pine-plantation-in-barley-wood-near-oxford-eng-land-in-which-84-per-cent-of-the-trees-are-in-a-dead-or-dying-condition-every-tree-shown-is-diseased-and-the-tree-in-the-foreground-produced-spores-on-RG894G.jpg ". [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 22 BULLETIN 1186, U. S. DEPARTMENT OF AGRICULTURE. fatally attacked at Murthly Castle, Scotland, in 1893, although no record of the occurrence was published until 1898 {26). The rust so badly damaged and disfigured the beautiful ornamental specimens. Fig. 12.—Interior view of a white-pine plantation in Barley Wood, near Oxford, Eng- land, in which 84 per cent of the trees are in a dead or dying condition. Every tree shown is diseased, and the tree in the foreground produced spores on Stock Photo")
RMRG894G–. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 22 BULLETIN 1186, U. S. DEPARTMENT OF AGRICULTURE. fatally attacked at Murthly Castle, Scotland, in 1893, although no record of the occurrence was published until 1898 {26). The rust so badly damaged and disfigured the beautiful ornamental specimens. Fig. 12.—Interior view of a white-pine plantation in Barley Wood, near Oxford, Eng- land, in which 84 per cent of the trees are in a dead or dying condition. Every tree shown is diseased, and the tree in the foreground produced spores on
RMRH2R2B–. The British rust fungi (Uredinales), their biology and classification. Uredineae. UREDO 385 producing its spores in the following spring. The fungus is recorded also on R. ferrugineum and R. dahuricum, but does not attack the American or Himalayan species. Distribution : Central Europe, Siberia. Berk, et W. G. Smith in Gard. Uredo Lynchii Plowr. Trichobasis Lynchii Berk, in Gard. Chron. 1877, viii. 242 Br. Ann. Nat. Hist. 1878, ser. 5, i. 26 Chron. 1885, xxiii. 693, f. 154. Uredo Lyncldi Plowr. Ured. p. 259. Sacc. Syll. vii. 852. Uredospores. Sori subepidermal, eruinpent, on small pallid spo
RMRH2XKP–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. • on geraniacea: 105 by a pore; spores roundish-polygonal to oblong-ovate, densely verruculose, yellow, 24—33 x 18—2(i jx. Uredospures. Sori hypophyllous, on yellow spots, in circi- nate groups, seldom scattered, rather large, pulverulent, choco- late-brown ; spores roundish, brown, distantly echinulate, 22— 26 fx ; epispore about 2 /x thick. Teleutospores. Sori hypophyllous, on yellowish or reddish. Fig. 58. U. Kabatianus. Teleutospores and uredospore, on G. pyrenaicum. spots, rather large, co
RMRH2X5G–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON COMPOSITE 139 12. Puccinia tinctoriae Magn. Puccinia Compositarum var. Serratulae Cooke, Exsicc. no. 33. P. tinctoriae Magn. in Abhand. Nat. Gesell. Niirnberg, 1900, xiii. 37 ; Ber. deutsch. Bot. Gesell. 1893, pi. 21, f. 27—8. Sydow, Monogr. i. 150, f. 127. Uredospores. Sori amphigenous, on inconspicuous pallid spots, scattered, minute, roundish, pulverulent, dark-cinnamon; spores globose to ellipsoid, echinulate, brown, 24—40 x 19—26 /*; epispore with two germ-pores towards the summit.. Fig
RMRE3742–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON GRAMINE^ 275 elliptical or linear, reddish-brown, pulverulent, without para physes; spores subglobose or ovate, echinulate, brownish, 25— 35 X 20—25 iJL. Teleutospores. Sori similar, but larger (2—4 mm.), compact, pulvinate, black'; spores oblong, rounded at both ends, with a cap- like thickening (5—10 fi) above, plainly constricted, brown, 50— 60 X 20—23 /u,; pedicels brownish, thick, persistent, 75—100 /i long. -^cidia on Rumex Acetosa, May and June; uredo- and teleu- tospores on Pkragmites communis, from
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 00 UROMY< ES. U. Pm Winter, Krypt Flor. i. L63. Cooke, Grevillea, vii. L35. Plowr. [Jred. p. 133. Sacc. S]]. vii. 542 p.p. Sydow, Monogr. ii. L24. Fischer, [Jred. Schweiz, p. 28, f. 22. Spermogones. Hypophyllous, numerous, scattered amongsl the a-cidia. /Ecidiospores. ^Ecidia distributed uniformly over the lower surface of the leaf, cup-shaped, with ;i while, torn, broadly revolute margin; spores densely and minutely verruculose, orange, 18—23 /x. irrcf/')sj)nre.s. Sori generally hypophyllo Stock Photo](https://c8.alamy.com/comp/RH2XN4/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-00-uromylt-es-u-pm-winter-krypt-flor-i-l63-cooke-grevillea-vii-l35-plowr-jred-p-133-sacc-s-vii-542-pp-sydow-monogr-ii-l24-fischer-jred-schweiz-p-28-f-22-spermogones-hypophyllous-numerous-scattered-amongsl-the-a-cidia-ecidiospores-ecidia-distributed-uniformly-over-the-lower-surface-of-the-leaf-cup-shaped-with-i-while-torn-broadly-revolute-margin-spores-densely-and-minutely-verruculose-orange-1823-x-irrcfsjnres-sori-generally-hypophyllo-RH2XN4.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 00 UROMY< ES. U. Pm Winter, Krypt Flor. i. L63. Cooke, Grevillea, vii. L35. Plowr. [Jred. p. 133. Sacc. S]]. vii. 542 p.p. Sydow, Monogr. ii. L24. Fischer, [Jred. Schweiz, p. 28, f. 22. Spermogones. Hypophyllous, numerous, scattered amongsl the a-cidia. /Ecidiospores. ^Ecidia distributed uniformly over the lower surface of the leaf, cup-shaped, with ;i while, torn, broadly revolute margin; spores densely and minutely verruculose, orange, 18—23 /x. irrcf/')sj)nre.s. Sori generally hypophyllo Stock Photo")
RMRH2XN4–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 00 UROMY< ES. U. Pm Winter, Krypt Flor. i. L63. Cooke, Grevillea, vii. L35. Plowr. [Jred. p. 133. Sacc. S]]. vii. 542 p.p. Sydow, Monogr. ii. L24. Fischer, [Jred. Schweiz, p. 28, f. 22. Spermogones. Hypophyllous, numerous, scattered amongsl the a-cidia. /Ecidiospores. ^Ecidia distributed uniformly over the lower surface of the leaf, cup-shaped, with ;i while, torn, broadly revolute margin; spores densely and minutely verruculose, orange, 18—23 /x. irrcf/')sj)nre.s. Sori generally hypophyllo
RMRDC1KR–. Minnesota mushrooms ... Botany; Mushrooms. GILL FUNGI Key to the Species 1. Cap whitish; gills whitish, distant 2. Cap rust-colored; gills yellow or yellowish, close 31 0. uiiibcllifera 0. campanella Omphalia umbellifera Umbel Cup Cap small 1-3 cm. wide, whitish or grayish, smooth, watery-translucent, striate, convex, plane and finally depressed; stem slender, 1-3 cm. by 2 mm., whitish, usually smooth, hairy at the base, stuffed or hollow; gills decurrent, whitish, broad, distant; spores subglobose to ellipsoid, 8-10 X 5-6;u,. The name refers to the shape of the cap. Common on decaying wood
RMRH2RYN–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 314 CRONARTIUM C. flaecidum Wint. Pilze, i. 236 (1884). Plowr. Ured. p. 254. Sacc. Syll. vii. 598. Peridermium Cornui Kleb. Zeitschr. f. Pflauzenkr. 1892, ii. 269, pi. 5, f. 2. ^cidiospores. ^cidia (P. Cornid) erumpent from the bark, forming large reddish-yellow bladders, generally occupying a portion of a branch in large numbers; spores ellipsoid, 22—26 X 16—20/x; epispore 3—4/* thick, verrucose, thinner on part of its surface and there smooth or somewhat reticulate. Uredospores. Sori small, pustular, surround
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 356 MELAMPSORA Lecythea Lini Berk. ; Cooke, Handb. p. 532 ; Micr. Fung. p. 222, pi. 8, f. 165—7. Melampsora Lini Desm. PI. Crypt, no. 2049. Plowr. Ured. p. 237. Sacc. Syll. vii. 588. Fischer, Ured. Sohweiz, p. 507. McAlpine, Rusts of Australia, p. 192, f. 236 and pi. I, f. 36. Spermogones) g^^ ^^^^^^ JEcidiospores ] Uredospores. Sori amphigenous and on the stems, small, scattered, roundish or oblong, flatly pulvinate, subepidermal, (?at first covered by a parenchymatous peridium, Fischer), orange; spores roundi Stock Photo](https://c8.alamy.com/comp/RE2G2T/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-356-melampsora-lecythea-lini-berk-cooke-handb-p-532-micr-fung-p-222-pi-8-f-1657-melampsora-lini-desm-pi-crypt-no-2049-plowr-ured-p-237-sacc-syll-vii-588-fischer-ured-sohweiz-p-507-mcalpine-rusts-of-australia-p-192-f-236-and-pi-i-f-36-spermogones-g-jecidiospores-uredospores-sori-amphigenous-and-on-the-stems-small-scattered-roundish-or-oblong-flatly-pulvinate-subepidermal-at-first-covered-by-a-parenchymatous-peridium-fischer-orange-spores-roundi-RE2G2T.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi. 356 MELAMPSORA Lecythea Lini Berk. ; Cooke, Handb. p. 532 ; Micr. Fung. p. 222, pi. 8, f. 165—7. Melampsora Lini Desm. PI. Crypt, no. 2049. Plowr. Ured. p. 237. Sacc. Syll. vii. 588. Fischer, Ured. Sohweiz, p. 507. McAlpine, Rusts of Australia, p. 192, f. 236 and pi. I, f. 36. Spermogones) g^^ ^^^^^^ JEcidiospores ] Uredospores. Sori amphigenous and on the stems, small, scattered, roundish or oblong, flatly pulvinate, subepidermal, (?at first covered by a parenchymatous peridium, Fischer), orange; spores roundi Stock Photo")
RMRE2G2T–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 356 MELAMPSORA Lecythea Lini Berk. ; Cooke, Handb. p. 532 ; Micr. Fung. p. 222, pi. 8, f. 165—7. Melampsora Lini Desm. PI. Crypt, no. 2049. Plowr. Ured. p. 237. Sacc. Syll. vii. 588. Fischer, Ured. Sohweiz, p. 507. McAlpine, Rusts of Australia, p. 192, f. 236 and pi. I, f. 36. Spermogones) g^^ ^^^^^^ JEcidiospores ] Uredospores. Sori amphigenous and on the stems, small, scattered, roundish or oblong, flatly pulvinate, subepidermal, (?at first covered by a parenchymatous peridium, Fischer), orange; spores roundi
RMRE37XE–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 144 PUCCINIA 18. Puccinia Cnici-oleracei Pers. Puccinia Cniei-oleraoei Pers. in Desm. Cat. des PI. omis., p. 24. Sydow, Monogr. i. 58, pi. 3, f. 47. Fischer, Ured. Schweiz, p. 292, 594, f. 213. P. Cardui Plowr. Ured. p. 216. Teleutospores. Sori hypophyllous, on discoloured roundish spots, minute, circinate, but mostly confluent in large patches as much as 5 mm. diam. which remain for a long time covered by the epidermis, compact, blackish-brown; spores clavate or subfusiform, rounded or rarely somewhat conical
RMRH2X1X–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 144 PUCCINIA 18. Puccinia Cnici-oleracei Pers. Fuccinia Cnici-oleracei Pers. in Desm. Cat. des PI. omis., p. 24. Sydow, Monogr. i. 58, pi. 3, f. 47. Fischer, Ured. Schweiz, p. 292, 594, f. 213. P. Carclui Plowr. Ured. p. 216. Teleutospores. Sori hypophyllous, on discoloured roundish spots, minute, circinate, but mostly confluent in large patches as much as 5 mm. diam. which remain for a long time covered by the epidermis, compact, blackish-brown; spores clavate or subfusiforin, rounded or rarely somewhat conica
RMRDTWA4–. Textbook of botany. Botany. THE WHEAT RUST 6S of each basal cell now grows a slender stalk; the end of this stalk is cut off by a wall, swells, and becomes an egg- shaped summer spore (Fig. 28). When the summer spore is ripe, it is easily broken away. After the first summer spore has begvin to develop, a second, and sometimes a third and a fourth, each with its stalk, may be formed from the same basal cell. Thus a single sorus, con- taining many basal cells, con- tinues for some time to produce new summer spores. The sum- mer spores seen separately have a yellowish color ; the sorus con- tai
RMRHK428–. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. 326 G. A. SNOW AND A. G. KAIS. - J- •• « § » § S.: ** AIR FLOW TIMER Figure 1. Apparatus for inoculating pine seedlings. Basidio- spores of Cronartium fusiforme released from telia on oak leaves in the large compartment are carried by a stream of moist air through the connecting tube to the tree in the small compartment. We have inoculated up to 200 seedlings with one collection of telia. Oak leaves usually begin shedding sufficient basid
RMRH2TFT–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON GRAMINE.*: 275 elliptical or linear, reddish-brown, pulverulent, without para- physes; spores subglobose or ovate, echinulate, brownish, 25— 35 x 20—25^. Teleutospores. Sori similar, but larger (2—4 mm.), compact, pulvinate, black: spores oblong, rounded at both ends, with a cap- like thickening (5—10 //,) above, plainly constricted, brown, 50— 60 x 20—23 fx; pedicels brownish, thick, persistent, 75—100 p long. ^Ecidia on Rumex Acetosa, May and June; uredo- and teleu- tospores on Phragmites
![. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 90 I'koMYCES. e occurred for many years consecutively on Thrift in my garden, I have never noticed the secidia; the uredospores lasl through the winter mi the evergreen leaves, and reproduce the Pungus about June; teleuto- spores are rather scarce. Distribution: Central and North-Western Europe. 5. Uromyces Trifolii LeV. Puccinia Trifolii Hedw. )'. in I"'. Flor. fr. ii. 225. Uromyces Trifolii Lev. Ann. Sci. Nat. ser. 3, viii. 371. Plowr. [Jred. p. 12 1 p.p. Sacc. Syll. vii. 534 p.p. Sydow, Stock Photo](https://c8.alamy.com/comp/RH2XWN/the-british-rust-fungi-uredinales-their-biology-and-classification-rust-fungi-great-britain-90-ikomyces-e-occurred-for-many-years-consecutively-on-thrift-in-my-garden-i-have-never-noticed-the-secidia-the-uredospores-lasl-through-the-winter-mi-the-evergreen-leaves-and-reproduce-the-pungus-about-june-teleuto-spores-are-rather-scarce-distribution-central-and-north-western-europe-5-uromyces-trifolii-lev-puccinia-trifolii-hedw-in-iquot-flor-fr-ii-225-uromyces-trifolii-lev-ann-sci-nat-ser-3-viii-371-plowr-jred-p-12-1-pp-sacc-syll-vii-534-pp-sydow-RH2XWN.jpg ". The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 90 I'koMYCES. e occurred for many years consecutively on Thrift in my garden, I have never noticed the secidia; the uredospores lasl through the winter mi the evergreen leaves, and reproduce the Pungus about June; teleuto- spores are rather scarce. Distribution: Central and North-Western Europe. 5. Uromyces Trifolii LeV. Puccinia Trifolii Hedw. )'. in I"'. Flor. fr. ii. 225. Uromyces Trifolii Lev. Ann. Sci. Nat. ser. 3, viii. 371. Plowr. [Jred. p. 12 1 p.p. Sacc. Syll. vii. 534 p.p. Sydow, Stock Photo")
RMRH2XWN–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 90 I'koMYCES. e occurred for many years consecutively on Thrift in my garden, I have never noticed the secidia; the uredospores lasl through the winter mi the evergreen leaves, and reproduce the Pungus about June; teleuto- spores are rather scarce. Distribution: Central and North-Western Europe. 5. Uromyces Trifolii LeV. Puccinia Trifolii Hedw. )'. in I"'. Flor. fr. ii. 225. Uromyces Trifolii Lev. Ann. Sci. Nat. ser. 3, viii. 371. Plowr. [Jred. p. 12 1 p.p. Sacc. Syll. vii. 534 p.p. Sydow,
RMRH93H0–. Botany for high schools. Botany. Cluster-cup stage of wheat rust. Fig. 246. Single spot, show- ing cluster cups enlarged. Fig. 247. Two cluster cups more en- larged, showing split margin. spermogonia in a gelat- inous mass, sweetish to the taste. Fertilization takes place by the fusion of two cells in adjacent rows at the bottom of the young cluster cup in some cases, and by the migra- tion of a nucleus from a basal cell into the one above, or laterally situ- ated in other cases. The cluster-cup spores develop in chains from this, each having two nuclei which do not fuse until the final stag
RMRH2WNA–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON LABIATE 175 met with, viz. spores with three or more cells variously arranged. See Grove, Gardener's Chronicle, xxiv (1885), p. 180, f. 38. The mycelium is probably perennial. Distribution : Central and Western Europe. 47. Puccinia annularis Schlecht. Uredo annularis Strauss in Wetter. Ann. ii. 106. Puccinia annularis Schlecht. Flor. Berol. ii. 132 (1824). Plowr. Ured. p. 217. Sacc. Syll. vii. 689. Sydow, Monogr. i. 300. Fischer, Ured. Schweiz, p. 329, f. 240. P. Scorodoniae Link. Spec. ii.
RMRE373Y–. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON GEAMINE.E 277 globose, aculeate, yellow-brown, 20—28x20—24/i; epispore 3—6 fj, thick, with three germ-pores. Teleutospores. Sori similar, often confluent and as much as 8 mm. long, conspicuous, pulvi- nate, black; spores ellipsoid, rounded at both ends, slightly thickened (up to 5 fi) above, hardly constricted, smooth, brown, 32—46x20—30/i; pedicels hya- line or yellowish, curved, per- sistent, rather thin, very long (as much as 120/t); a few mesospores sometimes intermixed. [^cidia on Melampyrum spp.J; ured
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