196 British Uredinecs and Ustilaginecs. 



Puccinia sonchi. Rob. 



Uredospores — Sori small, brown, mostly hypophyllous, at first 

 buUate, then naked, roundish, pulverulent. Spores roundish 

 or ovate, verrucose, 23-35 ^ 16-2 i/x. 



Tehiitospores — Sori black, compact, roundish, surrounded by dark 



brown, clavate paraphyses, 80-100 x 12-15/A. Spores oblong 



or ovate, constricted, rounded at both ends, smooth, brown, 



35-60 X 20-30/*. Mesospores numerous, of similar form, but 



unicellular, apex more distinctly thickened (45-5 5/x). Pedicels 



long, persistent. 



Synonym. 



Puccinia sonchi, Rob. Winter in Rabh., " Krypt. Flor.," vol. i. 

 p. 189. Desmaz., Ann. Sc. Nat., 3rd series, vol. ii. p. 274. 

 Grove, Science Gossip, 1885, vol. xxi. p. 9, figs. 6-9. 



On Sonchits arvensis ; Mr. H. Hawkes. 

 October. 



Puccinia lychnidearum. Link. 



Credospores — Sori on pallid yellowish spots, subrotund, flat, 

 scattered, often arranged in a circular manner, hypophyllous, 

 cinnamon-brown. Spores subglobose or ovate, pale brown, 

 echinulate, 18-20 x 23-30/x. 



Teleutospores — Sori dark brown, on pale spots, oblong or roundish, 

 generally circinating, soon naked, but persistent. Spores pale 

 brown, ovate, clavate, or subfusiform, apex not thickened, 

 smooth, 35-40 X 15-18/X. Pedicels long, persistent, hyaline. 



Synonyms. 



Puccinia lychnidearum, Link. Linn., " Sp. Plant," vol. ii. p. 80. 

 Berk., " Eng. Flor.," vol. v. p. 367. Cooke, " Hdbk.," p. 505 ; 

 " Micro. Fungi," 4th edit, p. 210. 



Trichobasis lychnidearum. Lev. Cooke, "Hdbk.," p. 505; 

 " Micro. Fungi," 4th edit, p. 224. 



Pxsiccati. 

 Berk., 224. Cooke, i. 47; ii. 129. Vize, "Micro. Fungi 

 Brit.," 31, 130; "Micro. Fungi," 125. 



