238 British Uvedinee and Ustilaginee. 
Melampsora farinosa. (Pers.) 
Uredospores—Hypophyllous, roundish, scattered or clustered, often 
disposed in a circular manner, soon pulverulent, orange. 
Spores more or less globose, epispore echinulate, hyaline, con- 
tents golden-orange, germ-pores two, opposite each other, 
17-22 X 13-15. Paraphyses very numerous, clavate, straight 
or slightly curved below, swollen and obtuse above, hyaline, 
40-60 X 15-174, smooth. 
Teleutospores—Epiphyllous, without spots, always covered by the 
epidermis, in clusters, often confluent and forming thick crusts, 
flat, firm, at first orange, then brown, at length blackish. Spores 
cylindrical, rather narrower below, smooth, pale brownish, 
40-45 X I6-17p. 
Synonyms. 
Schrot., “ Krypt. Flor. Schl.,” vol. iv. p. 360. 
Credo farinosa, Pers. “Syn,” p. 217. Purton, “ Midl. Flor.,” 
vol. iii. p. 298. Johnst., “ Flor. Berw.,” vol. ii, p. 200. Grev., 
“ Flor, Edin.,” p. 437. 
Uredo caprearum. Berk., “‘ Eng. Flor.,” vol. v. p. 385. 
Lecythea caprearum, Berk. Cooke, “ Micro. Fungi,” 4th edit., 
p- 222. 
Oredo saliceti, Lév. Cooke, “ Micro. Fungi,” 4th edit., p. 221. 
Melampsora salicina, Lév. Cooke, “ Hdbk.,” p. 522; ‘“ Micro. 
Fungi,” 4th edit., p. 219, t. ix. figs. 191, 192. 
Melampsora salicis caprea, Pers. Winter, loc. cit., p. 239. 
Exsiccatt. 
Cooke, i 55, 85; ii 69, 155; “L. F.,” 49. Vize, ‘ Micro. 
Fungi,” 51; “ Micro. Fungi Brit.,” 67, 232. 
On Salix caprea, aurita, cinerea, reticulata. 
June to November. The teleutospores germinate in March 
and April. 
BioLoGy.—Rostrup and Nielsen state that the ecidiospores of 
this species are Ceoma euonymi. In 1884, I applied the germinating 
teleutospores from Sa/¢x capreato a small plant of Euonymus europaeus 
on three separate occasions (March 17, April 6, and May 14), but no 
result followed. In 1885, I repeated the experiment with the same 
