520 



C^OMACEI. 



1551. Uromyces gxaminum. Cooke. " Cocksfoot Rust." 



Epii^byllous on both surfaces ; sori oblong, or confluent and 

 linear, convex, black and shining, so as easily to be confounded 

 on casual observation "with Dothidia graminis^ P., at length 

 bursting longitudinally ; sporidia subglobose or ovate, tawny, 

 with hyaline pedicels of variable length. — Cooke Seem. Journ. 

 Cooke 31. F. ed. ii.^;. 225. 



On leayes of Dact?/lis glomerata. Oct. Share. 



This is undoubtedly the Uromyces — form of Puccinia graminis, although I 

 Lave not hitherto been able to trace the connection. It seems strange that 

 it should have hitherto been unnoticed. 



Uromyces ulmarijs. Lev. See Trij)hragmium ulmariGe. 



Uromyces primula. Lev. See Pucci7i{a primulce. 



Uromyces ieidis. Lev. See Puccinia truncata. 



Gen. 176. 



COLEOSFORIUM, Lev. 



Lev. " Coltsfoot Rust." 



Spores cylindrical, septate, some 

 separating at the joints, some of a 

 different nature, persistent. — Berk. 

 Outl. p. 333. {Fig. 211.) 



Fig. 211. 



1552. Coleosporium tussilaginis. 



On the under surface, prominent, crowded, generally forming 

 circles, becoming very confluent ; spores numerous, subovate, 

 orange-yellow. — Lev. Ann. Sc. Nat. Cooke M.F. t. 8, /. 180, 181. 

 Cooke exs. no. 80. Uredo compransor. Eng. Fl. v. p. 379. 

 {partly). Moug. exs. no. 390. 



On Coltsfoot leaves. Summer. Common. {^"^9' 211.) 



1553. Coleosporium pingue. Lev. " Tawny Rose Rust." 



Spots obliterated ; sori effuse, on the nerves and petioles of the 

 leaves ; spores ovoid, yellowish-brown. — Lev. Ann. Sc. Nat. 

 Cooke M.F. p. 212. Uredo pinguis. B.C. Fl. Fr, ii. p. 235. U. 

 effusa. Eng. Fl. Y.p. 381 (partly). 



On roses, &c. 



