Uredosorus Stock Photos and Images

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Uredosorus Stock Photos and Images

Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop Stock Photo

RF2WBRF1C–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

Fungi, Ascomycetes, Ustilaginales, Uredinales . Fig- >79- • Phragmidium Rubi Pers.; uredosorus, x6oo; after Sappin-Trouffy; b. Phragmidiumviolaceum Wint.; uredosorus, X480; after Blackman. by paraphyses, or in certain genera (Pucciniastrum, UrcJinopsis) by a pseudo-peridium. In the young sorus a regular layer of somewhat rectangular basalcells is formed, from which the uredospore mother-cells arise. In Colco-sporitim, in Chrysomyxa, and in the secondary caeomata of Phragmidiumsubcorlicium, they are produced in vertical rows like the typical aecidiosporemother-cells and divide to form uredos Stock Photo

RM2AN2Y4R–Fungi, Ascomycetes, Ustilaginales, Uredinales . Fig- >79- • Phragmidium Rubi Pers.; uredosorus, x6oo; after Sappin-Trouffy; b. Phragmidiumviolaceum Wint.; uredosorus, X480; after Blackman. by paraphyses, or in certain genera (Pucciniastrum, UrcJinopsis) by a pseudo-peridium. In the young sorus a regular layer of somewhat rectangular basalcells is formed, from which the uredospore mother-cells arise. In Colco-sporitim, in Chrysomyxa, and in the secondary caeomata of Phragmidiumsubcorlicium, they are produced in vertical rows like the typical aecidiosporemother-cells and divide to form uredos

RF2WBRF2M–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

. The rusts of Australia, their structure, nature, and classification . mewhat swollen by lengthened treatment with caustic potash.) 197. Uredospores of the same, showing the net-ike surface markings. ... X ;oo iqS. Compound stem, with basidia and uredospores of the same. 199. Compound structure from uredosorus l same, being probably commencement of teleutospore formation ... ... ... ... ... x 500 200. Uredospores of U. notabile on Acacia dealbata. 201. 202. Uredospores of the same, showing the net-like surface markings... X 500 203. Portion of spermogonium of the same, with basidia bearing sp Stock Photo

RM2CDD9E0–. The rusts of Australia, their structure, nature, and classification . mewhat swollen by lengthened treatment with caustic potash.) 197. Uredospores of the same, showing the net-ike surface markings. ... X ;oo iqS. Compound stem, with basidia and uredospores of the same. 199. Compound structure from uredosorus l same, being probably commencement of teleutospore formation ... ... ... ... ... x 500 200. Uredospores of U. notabile on Acacia dealbata. 201. 202. Uredospores of the same, showing the net-like surface markings... X 500 203. Portion of spermogonium of the same, with basidia bearing sp

RF2WBRF2B–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

. The rusts of Australia, their structure, nature, and classification . n G. II. Robinson, Phot. X 50. UROMYCES. GOODENIACEAE, RUBIACEAE, LEGUMINOSAE, AND CHENOPODIACEAE 276 Explanation of Plates. PLATE XVIII. (All Figures X 250 u?iless otherwise stated.) UROMYCES.Fig. 150. Uredospores of Uromyccs folygoni on Polygonum aviculare. 151. Teleutospores of same. 152. Uredospores of U. caryofhyllinus on Dianthus caryo-phyllus, with prominent scattered germ pores. 153. Teleutospores and one uredospore of same. 154. Section through leaf of Dianthus caryofhyllus, showing uredosorus of U. caryo- fhyllin Stock Photo

RM2CDD9PT–. The rusts of Australia, their structure, nature, and classification . n G. II. Robinson, Phot. X 50. UROMYCES. GOODENIACEAE, RUBIACEAE, LEGUMINOSAE, AND CHENOPODIACEAE 276 Explanation of Plates. PLATE XVIII. (All Figures X 250 u?iless otherwise stated.) UROMYCES.Fig. 150. Uredospores of Uromyccs folygoni on Polygonum aviculare. 151. Teleutospores of same. 152. Uredospores of U. caryofhyllinus on Dianthus caryo-phyllus, with prominent scattered germ pores. 153. Teleutospores and one uredospore of same. 154. Section through leaf of Dianthus caryofhyllus, showing uredosorus of U. caryo- fhyllin

RF2WBRF1H–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. 2l6 PROTOBASIDIOMYCETES [CH.. Fig. 196. Triphragmidium Ulmariae (Schum.) Link; primary uredosorus; condition intermediate between migra- tion and conjugation of fertile cell; after Olive. that Moreau found both processes (cell-fusion being considerably more common than migration) in the same caeoma in Phragmidium subcorticium. Since 1905 nuclear association by the fusion of fertile cells in pairs has been observed in a number of species, and seems, according to our present knowledge, to be the usual method. In the primary uredosorus of Tr Stock Photo

RMRDX0EF–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. 2l6 PROTOBASIDIOMYCETES [CH.. Fig. 196. Triphragmidium Ulmariae (Schum.) Link; primary uredosorus; condition intermediate between migra- tion and conjugation of fertile cell; after Olive. that Moreau found both processes (cell-fusion being considerably more common than migration) in the same caeoma in Phragmidium subcorticium. Since 1905 nuclear association by the fusion of fertile cells in pairs has been observed in a number of species, and seems, according to our present knowledge, to be the usual method. In the primary uredosorus of Tr

RF2WBRF2G–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig. 177- PucciniaFalcariae; branched fertile cell of aecidium or primary uredosorus, x 1200; after Dittschlag. Fig. 178. Phragmidiicm Potentillae-Canadensis Diet.; a. conjugation; b. branched fertile cell; after Christman.. 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.. Gwynne-Vaughan, Helen Charlotte Isabella (Fraser) Dame, 1879-. Cambridge [Eng] University Press Stock Photo

RMRDX0KC–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig. 177- PucciniaFalcariae; branched fertile cell of aecidium or primary uredosorus, x 1200; after Dittschlag. Fig. 178. Phragmidiicm Potentillae-Canadensis Diet.; a. conjugation; b. branched fertile cell; after Christman.. 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.. Gwynne-Vaughan, Helen Charlotte Isabella (Fraser) Dame, 1879-. Cambridge [Eng] University Press

RF2WBRF23–Yellow or stripe rust, Puccinia striiformis var striiformis, a severe infection on a wheat crop

. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig 179. a. Phragviidium Rubi Pers.; uredosorus, x6oo; after Sappin-Tiouffy; /'. Phragmidium violaceum'VimX..; uredosorus, X480; after Blackman. by paraphyses, or in certain genera {Pucciniastrum, Uredinopsis) by a pseudo- peridium. In the young sorus a regular layer of somewhat rectangular basal cells is formed, from which the uredospore mother-cells arise. In Coleo- sporium, in Chrysomyxa, and in the secondary caeomata of Phragmidium subcorticiuin, they are produced in vertical rows like the typical aecidiospore mother-cells and divide Stock Photo

RMRDX0JY–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. Fig 179. a. Phragviidium Rubi Pers.; uredosorus, x6oo; after Sappin-Tiouffy; /'. Phragmidium violaceum'VimX..; uredosorus, X480; after Blackman. by paraphyses, or in certain genera {Pucciniastrum, Uredinopsis) by a pseudo- peridium. In the young sorus a regular layer of somewhat rectangular basal cells is formed, from which the uredospore mother-cells arise. In Coleo- sporium, in Chrysomyxa, and in the secondary caeomata of Phragmidium subcorticiuin, they are produced in vertical rows like the typical aecidiospore mother-cells and divide

Severe yellow or stripe rust Puccinia striiformis on a wheat crop. Stock Photo

RF2JD6RYR–Severe yellow or stripe rust Puccinia striiformis on a wheat crop.

. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. VIII] UREDINALES 207. Fig. 183. Coleosporium Son- chi ; uredosorus, x 545 ; after Holden and Harper. group of basal cells of indefinite extent, from which the aecidiospore mother- cells are cut off The aecidium is, in fact, no more a definite organ than the uredo- or teleutosorus, and only appears so in the more elaborate forms because of the modification of its peripheral cells to form a pseudoperidium. The important distinction lies not in the general morpho- logy of the sorus, but in the fact that an association of two nuclei from diff Stock Photo

RMRDX0HR–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. VIII] UREDINALES 207. Fig. 183. Coleosporium Son- chi ; uredosorus, x 545 ; after Holden and Harper. group of basal cells of indefinite extent, from which the aecidiospore mother- cells are cut off The aecidium is, in fact, no more a definite organ than the uredo- or teleutosorus, and only appears so in the more elaborate forms because of the modification of its peripheral cells to form a pseudoperidium. The important distinction lies not in the general morpho- logy of the sorus, but in the fact that an association of two nuclei from diff