I 20 British Urcdinece and Ustila^inecE. 



C3 



fundibuliform germ-pore, 25-40 x 20-25/x. Pedicels long, 

 persistent, pale brown. 



Sy7tony}7is. 



Uromycesorobi, Pers. Winter in Rabh., "Krypt. Flor.," 2nd edit., 

 vol. i. p. 158, in part. 



Uromyccs fabiv. Cooke, " Grevillea," vol. vii. p. 135. 



Uroniyces appendicitlata, Lev. Cooke, " Hdbk.," p. 518; 

 "Micro. Fungi," 4th edit., p. 212. 



Uredo fahce, Pers. Romer, "New Mag.," vol. i. p. 92. Grev., 

 "Scot. Crypt. Flor.," t. 95 ; "Flor. Edin.," p. 436, in part. 



Uredo fusca. Purton, " Midi. Flor.," vols. ii. and iii., No. 1 130. 



Uredo leguminosarum , Link. Berk., " Eng. Flor.," p. 383. 



Uredo appendiculosa. Berk., "Eng. Flor.," p. 383. 



Trichobasis fab(e, Lev. Cooke, " Micro. Fungi," 4tli edit., 

 p. 225. 



Puccinia globosa. Grev., " Flor. Edin.," p. 368; "Scot. Crypt. 

 Flor.," t. 29. 



Puccinia fabce, Link. Berk., "Eng. Flor.," p. 434. Cooke, 

 " Hdbk.," p. 508; "Micro. Fungi," 4th edit, p. 211. 



Exsiccati. 

 Cooke, i. 71; ii. 52. Vize, "Micro. Fungi," 44 ; "Micro. 

 Fungi Brit.," 63, 223. 



On Faba vulgaris, Vicia cracca, sepium, saiii'a, Lathyrus pra- 

 tensis, Pisum sativum. 



^cidiospores, April and May ; uredospores. May to July ; 

 teleutospores, July to November, and lasting through the winter 

 on the dead stems. 



Biology. — There are several species of Uromyces parasitical 

 upon the Leguminosre. By most botanists the above is considered 

 identical with U. ervi. As early in the year as February 8 (1884), I 

 produced the ^cidium upon a bean plant {V. fabce) from teleutospores 

 on bean straw which had been grown for agricultural purposes. The 

 latent period between placing the teleutospores on the host-plant and 

 the appearance of the spermogonia was twenty-three days. The cul- 

 ture was repeated on March 20 in two experiments, both of which 

 were successful, the spermogonia in each case showing on April 16. 

 In 1886, four cultures were made with U. ervi by placing the germi- 



