. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON POLYGONACE^E 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. riviparum issued by Fuckel (see Symb. Myc. p. 57). It is a purely Alpine species. 97. Puccinia Polygoni-amphibii Pers. JEcidium Geranii DC. ; Cooke, Handb. p. 543; Micr. Fung. p. 199 ;(?). JE. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Polygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasi
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON POLYGONACE^E 227 seen no British specimens but those collected at Mar Lodge and Braemar, which are described above ; the spores of these agree with those of a specimen on Pol. riviparum issued by Fuckel (see Symb. Myc. p. 57). It is a purely Alpine species. 97. Puccinia Polygoni-amphibii Pers. JEcidium Geranii DC. ; Cooke, Handb. p. 543; Micr. Fung. p. 199 ;(?). JE. sanguinolentum Lindr. Myk. Notiz. in Bot. Notis. 1900, p. 241. Uredo Polygonorum DC. ; Grev. Sc. Cr. Fl. pi. 80. Trichobasis Polygonorum Berk. ; Cooke, Micr. Fung. p. 226 Puccinia Polygonorum Link ; Cooke, Handb. p. 495 ; Micr. Fung. p. 203 P. Polygoni Pers. ; Plowr. Ured. p. 188 Sacc. Syll. vii. 636 P. Polygoni-amphibii Pers. Syn. p. 227 ; Sydow, Monogr. i. 569 Fischer, Ured. Schweiz, p. 301, f. 220. [Spermogones. Few, amphigenous. jEcidiospores. yEcidia hypophyllous, mostly in concentric groups, on well-marked spots which are deep-red or purplish and often surrounded by a conspicuous green- ish-yellow zone, sometimes occupying the greater part of a leaf, cup-shaped, with a much cut recurved margin; spores finely punctate-verruculose, yellowish, 18—28 ^.] Uredospores. Sori amphigenous, more often hypophyllous, scattered, roundish, soon naked, pulverulent, brownish; spores ellipsoid to obovate, faintly echinulate, yellowish-brown, 25—28 x 18—21 ix, with two germ- pores in the upper half. Teleutospores. Sori chiefly hypophyllous, not projecting, long covered by the epidermis, surrounding the uredo-sori in a circular fashion, dark-brown; spores oblong to clavate, rounded and thickened above (5—12 /x), often obliquely conical at the apex, more or less tapering below, gently constricted, smooth, yellow-brown, 35—52x16—22 /j,; pedicels nearly hyaline, persistent. 15—2. Fig. 175. P. Polygoni-amphi- bii. Teleutospores, on P. Please note that these images
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