. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. Teleutospores. Sori araphigenous or on the stems, but generally hypophyllous, scattered or crowded and confluent, minute, roundish, surrounded by the torn epidermis, pulverulent, dark- brown ; spores broadly ellipsoid, depressed, rounded at both ends, scarcely thickened above, not constricted, smooth, dark chest- nut-brown, 20—35 x 17—24 p : pedicels hyaline, about as long as the spore; spores occasionally three-celled, like Triphragmium. On Seduvt Rhodiola (roseum). Very rare. Glen Callater, J
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. Teleutospores. Sori araphigenous or on the stems, but generally hypophyllous, scattered or crowded and confluent, minute, roundish, surrounded by the torn epidermis, pulverulent, dark- brown ; spores broadly ellipsoid, depressed, rounded at both ends, scarcely thickened above, not constricted, smooth, dark chest- nut-brown, 20—35 x 17—24 p : pedicels hyaline, about as long as the spore; spores occasionally three-celled, like Triphragmium. On Seduvt Rhodiola (roseum). Very rare. Glen Callater, July, 1844 (W. Gardiner). (Fig. 157.) Distribution : Norway. Fig. 157. P. Rhodiolae. Teleuto- spores, from Glen Callater (ex herb. Berkeley). 81. Puccinia Umbilici Guep. Puccinia Umbilici Guep. in Duby, Bot. Gall. ii. 890. Cooke, Handb. p. 505 ; Micr. Fung. p. 211, pi. 4, f. 80—1. Plowr. Ured. p. 204. Sacc. Syll. vii. 700. Sydow, Monogr. i. 492, f. 403. Teleutospores. Sori amphigenous or on the petioles, on yellowish spots, minute, roundish, usually circinate, at length confluent and forming large orbicular clusters up to 1 cm. diain., at first compact, then pulverulent, dark reddish-brown; spores broadly ellipsoid or subglobose, rounded at both ends, not thickened above but surmounted by a minute subhyaline apiculus or pore-cap, not constricted, smooth, bright chestnut- brown, 28—32 x 18—26 [x, the cells often depressed { broader than long) and frequently oblique ; pedicels short, hyaline. On Cotyledon Umbilicus. Locally common. May and June ; in mild localities it can be found even as early as January. (Fig. 158.). Fig. 158. P. Umbilici. Teleutospores. Distribution : France, Belgium, Portugal. 14—2. 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. Ca
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