ijS British UredinecE and Ustilaginecr. 



Synonyms. 



Uromyces alliorum, D. C. Cooke, "Grevillea," vol. vii. p. 138 ; 

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



Uredo alliorum, D. C. Cooke, "Micro. Fungi," 4th edit., 

 p. 217, in part. 



I am unacquainted with this species. 



IV. UROMYCOPSIS. Schrot. 

 Having spermogonia, secidiospores, and teleutospores. Uredospores absent. 



Uromyces behenis. (D. C.) 



^-Ecidiospores — Pseudoperidia in round, often confluent, circinate 

 clusters, sometimes almost covering the affected leaf, slightly 

 prominent, rather short, with broad, torn, whitish-yellow edges. 

 Spores round or elongate, finely echinulate, orange-yellow, 

 15-20/X, in diameter. 



Teleutospores — Sori dark brown, often occurring with the secidia 

 in small, roundish clusters, sometimes confluent, long covered 

 by the epidermis. Spores elliptical or ovate, smooth, with 

 rather markedly thickened summits, 25-40 x 17-25/x. 

 Pedicels very long, stout, persistent, hyaline or yellowish. 



Synonyjns. 



Uromyces behenis, D. C. Winter in Rabh,, " Krypt. Flor.," 

 vol. i. p. 153. 



^cidium behenis, D. C. " Encycl.," vol. viii. p. 239. Berk., 

 " Eng. Flor.," vol. v. p. 372. Cooke, " Hdbk.," p. 541 ; " Micro. 

 Fungi," 4th edit., p. 197. 



Uromyces behenis. Lev. Cooke, "Grevillea," vol. vii. p. 134; 

 " Micro. Fungi," 4th edit., p. 213. 



Exsiccati. 



Baxt, 90. Cooke, i. 442. Vize, " Fungi Brit.," 167 ; " Micro. 

 Fungi Brit.," 134. 



On Silene inflata, mariiima. July to September. 



Biology. — The mycelium causes considerable discoloration of 

 the host-plant, the affected spots being sometimes yellow, sometimes 



