124 British Uvedinee and Ustilagince. 
Synonyms. 
Uromyces polygoni (Pers.). Winter in Rabh., “ Krypt. Flor.,” 
vol. i. p. 154. 
Puccinia polygont. Pers., “ Disp. Meth.,” p. 39. 
Acidium avicularia, Kze. Cooke, “ Micro. Fungi,” 4th edit., 
p. 199; ‘‘ Hdbk.,” p. 545. 
Uredo polygonorum. Grev., “Scot. Crypt. Flor,” t. 80; 
“Flor. Edin.,” p. 434. Johnst., “Flor. Berw.,” vol. li, p. 201. 
Berk., “Eng. Flor.,” p. 377. 
Trichobasis polygonorum, B. Cooke, “Micro, Fungi,” 4th 
edit., p. 226. 
Puccinia vaginalium, Link. Cooke, “ Hdbk.,” p. 519. Berk., 
“Eng. Flor.,” vol. v. p. 363. Cooke, ‘Micro. Fungi,” 4th edit., 
p- 204. 
Puccinia avicularia. Grev., “Flor. Edin.,” p. 429. Johnst., 
“Flor. Berw.,” vol. iL p. 195. 
Uromyces polygoni, Fckl. Cooke, “ Hdbk.,” p. 519; “ Micro. 
Fungi,” 4th edit., p. 213. 
Uromyces avicularie, Schrot. Cooke, “Grevillea,” vol. vii. 
p- 136. 
E-xstecati. 
_ Cooke, i. 123; ii. 144, 312. Vize, “Micro. Fungi Brit.,” go; 
“ Micro. Fungi,” 170. 
On Polygonum aviculare. 
Ecidiospores, May ; uredospores, May to July; teleutospores, 
July to November. 
BIoLoGy.—The ecidium usually occurs on yellowish spots, which 
are often surrounded by a reddish margin. On the stems it causes 
considerable distortion. 
Uromyces trifolii, (Alb. and Schw.) 
A:cidiospores in circular clusters, on pallid spots. Pseudoperidia 
shortly cylindrical, flattish, on the stems in elongated groups ; 
edges whitish, torn. Spores subglobose or irregular, finely 
verrucose, pale orange, 14-23 in diameter. 
