. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON GRAMINEjE 275 elliptical or linear, reddish-brown, pulvernlent, withont para physes; sjjores subglobose or ovate, echinvdate, brownish, 25â 35 X 20â25 fx. Teleutospores. Sori similar, but larger (2â4 mm.), compact, pulvinate, black; spores oblong, rounded at both ends, with a cap- like thickening (5â10 /x) above, plainly constricted, brown, 50â CO X 20â23 yw.; pedicels brownish, thick, persistent, 75â100 yu, long. ^cidia on Rumex Acetosa, May and June; uredo- and teleu- tospores on P/iragniites coinviunis, f
. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON GRAMINEjE 275 elliptical or linear, reddish-brown, pulvernlent, withont para physes; sjjores subglobose or ovate, echinvdate, brownish, 25â 35 X 20â25 fx. Teleutospores. Sori similar, but larger (2â4 mm.), compact, pulvinate, black; spores oblong, rounded at both ends, with a cap- like thickening (5â10 /x) above, plainly constricted, brown, 50â CO X 20â23 yw.; pedicels brownish, thick, persistent, 75â100 yu, long. ^cidia on Rumex Acetosa, May and June; uredo- and teleu- tospores on P/iragniites coinviunis, from July. Rare. (Fig. 209.) The results of Plowright's cultures have been confirmed by Klebahn, but at any rate this species is very closely allied to the previous one, and should rather be considered as merely a biological race of Fig. 209. P. Trail a. Teleuto- spores, ami sori on leaf of Phrag- mites. Distribution : Holland, Germany. 129. Puccinia Agrostidis Plowr. ' ^cidium Aquilegiae Pers. ; Plowr. Ured. p. 263. yE. Ranuncidacearum var. Aquilegiae DC. ; Cooke, Handb. p. 539. P. Agrostidis Plowr. Card. Chronicle, 1890, ii. 139 ; Grevillea, xxi. 110. Sacc. Syll. xi. 202. Sydow, Monogr. i. 717. McAlpine, Rusts of Australia, p. 114, f. 27 (?)⢠Fischer, Ured. Schweiz, p. 353, f. 257. Spermogones. Honey-coloured, on round spots. ^â Ecidiospores. ^cidia on rather large roundish yellow spots which are often thickened and margined with brown, crowded, hypophyllous, shortly cylindrical, with a torn white margin; spores faintly verruculose, orange, 16â30 x 14â20/i. Uredospoi^es. Sori amphigenous, on yellow spots, elongated or linear, about 1 mm. long, bright-orange; spores globose to 18â2. 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 Grove, William Bywater. Cambridge, Univ. Press
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