. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 71. U. Gageae. TeleutosporeB. 31. Uromyces Gageae Beck. Uromyces Gageae Beck, Verh. Gesell. Wien, xxx. 26. Sacc. Syll. vii. 568. Sydow, Monogr. ii. 273. Fischer, "Ured. Schweiz, p. 4, f. 3. U. Ornithogali Plowr. Ured. p. 142. Teleutospores. Sori amphigenous, scattered, roundish or elliptical, 1—3 mm. long, covered by the lead-coloured epidermis which at length splits longitudinally, then naked, pul- verulent, dark-brown; spores subglobose to obovoid, not or scarcely thickened above, b
. The British rust fungi (Uredinales) their biology and classification. Rust fungi. Fig. 71. U. Gageae. TeleutosporeB. 31. Uromyces Gageae Beck. Uromyces Gageae Beck, Verh. Gesell. Wien, xxx. 26. Sacc. Syll. vii. 568. Sydow, Monogr. ii. 273. Fischer, "Ured. Schweiz, p. 4, f. 3. U. Ornithogali Plowr. Ured. p. 142. Teleutospores. Sori amphigenous, scattered, roundish or elliptical, 1—3 mm. long, covered by the lead-coloured epidermis which at length splits longitudinally, then naked, pul- verulent, dark-brown; spores subglobose to obovoid, not or scarcely thickened above, but usually with a hyaline apiculus, smooth, brown, 26—40 x 18—28 fi; epi- spore 2 fi thick; pedicels hyaline, shorter than the spores. On leaves of Gagea lutea. Rare. April, May. (Fig. 71.) The teleutospores mature in spring, according to Fischer. Plowright says that the mycelium causes variously shaped pale spots on the affected leaves ; but I find no spots and in Sydow it is said that there are none. Distribution : Western and Central Europe. 32. Uromyces Scillarum Wint. Uredo Scillarum Grev. in Smith, Engl. PI. v. 376. Uromyces oonoentricus L^v.; Cooke, Handb. p. 519; Grevillea, vii. 138 ; Micr. Fung. p. 213. U. Scillarum Winter, Pilze Deutschl. p. 142 ; Plowr. Ured. p. 141. Sacc. Syll. vii. 567. Sydow, Monogr. ii. 278. Fischer, Ured. Schweiz, p. 2, f. 1. Sori amphigenous, usually seated on pallid or yellowish spots, small, round or oblong, up to I mm. diara., collected into round or oblong clusters, often concentrically arranged, sometimes confluent, long covered by the epi- dermis which at length splits and surrounds them, pulverulent, dark- brown; spores subglobose to oblong, usually rounded and not thickened above, smooth, occasionally marked with a few very faint lines Fig. 72. V. Scillarum. Teleu- tospores, on iS. nutans; a, teleutospore, on S. campanu- Please note that these images are extracted from scanned page images that may have been
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