. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 314 CRONARTIUM C. flaccidum Wint. Pilze, i. 236 1884). Plowr. Ured. p. 254. Sacc. Syll. \ii. 598. Peridemiium Cornui Kleb. Zeitschr. f. Pflauzenkr. L892, ii. 269, pi. 5, f. 2. /Ecidiospores. /Ecidia (P. Cornui) erumpenl from the bark, forming large reddish-yelkm Madders, generally occupying a portion of a branch in large numbers: spores ellipsoid, 'I'l—26 x 16—20 /a; epispore 3—4 \x thick, verrucose, thinner od part of its surface and there smooth or somewhat reticulate. Uredospores. Sori small
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. 314 CRONARTIUM C. flaccidum Wint. Pilze, i. 236 1884). Plowr. Ured. p. 254. Sacc. Syll. \ii. 598. Peridemiium Cornui Kleb. Zeitschr. f. Pflauzenkr. L892, ii. 269, pi. 5, f. 2. /Ecidiospores. /Ecidia (P. Cornui) erumpenl from the bark, forming large reddish-yelkm Madders, generally occupying a portion of a branch in large numbers: spores ellipsoid, 'I'l—26 x 16—20 /a; epispore 3—4 \x thick, verrucose, thinner od part of its surface and there smooth or somewhat reticulate. Uredospores. Sori small,pustular,surrounded bya peridium which opens at the summit with a pore; spores ellipsoid or ovate spai Immlate. 21—24x17—21 Fig. 238. C. asclepiadeum. n. Peridermium Cornui on branch of Pine; h, teleuto-sori on leaf of Peony (reduced); c, uredospore x 600 ; d, part of a column of teleutospores x 300. Teleutospores. Sori cylindrical, often curved, arranged in large clusters, over 1 mm. high, brown, at length horny, compact; spores ellipsoid or cylindrical-oblong, reaching 5G /u. long and 14 /j, broad; epispore thin, slightly thicker above. .Keidia on the branches of Pinus silvestris, May, June; uredo- and teleutospores on Paeonia officinalis in gardens, July—October. Very uncommon. (Fig. 238.) It has been proved by the researches of Cornu, Klebahn, Fischer and many others, not only that the remarkable eecidia on Pine are genetically connected with the other spore-forms on Peony, but also that they can. 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, W. B. (William Bywater), 1848-1938. Cambridge, University Press
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