Hdej^opttccinia. 167 



Biology. — The teleutospores are surrounded by a bed of dark- 

 brown tissue, the individual fibres of which are not easily demon- 

 strable. Numerous cultures in 1885-6 proved the connection be- 

 tween the jEcidium ari and this Puccinia. The teleutospores of this 

 species placed on Allitim tirsinuvi produce no effect. 



Puccinia rubigo-vera. (D. C.) 



^cidiosporcs — Spots large, generally circular, discoloured, gene- 

 rally crowded. Pseudoperidia flat, broad, with torn white 

 edges. Spores subglobose, verrucose, orange-yellow, 20-25/A 

 in diameter. 



Uredospores — Sori oblong or linear, scattered, yellow, pulverulent. 

 Spores mostly round or ovate, echinulate, with three or four 

 germ-pores, yellow, 20-30 X 17-24/x. 



Teleutospores — Sori small, oval, or linear, black, covered by epi- 

 dermis, surrounded by a thick bed of brow^n paraphyses. 

 Spores oblong or elongate, cuneiform, slightly constricted, 

 the lower cell generally attenuated, apex thickened, truncate 

 or often obliquely conical. Spores smooth, brown, variable in 

 size, 40-60 X i5-20;u,. Pedicels short. 



Synonyms. 



Puccinia rubigo-vera (D. C). Winter in Rabh., " Krypt. 

 Flor.," vol. i. p. 217. 



Uredo rubigo-vera. D. C-, "Flore frang.," vol. vi. p. 83. 

 Berk., " Eng. Flor.," vol. v. p. 375. 



Trichobasis rubigo-vera., Lev. Cooke, '•' Micro. Fungi," 4th 

 edit., p. 222, t. viii. figs. 140-142. 



Trichobasis glumarum, Lev. Berk,, "Outl.," p. 332. Cooke, 

 " Hdbk.," p. 529 ; " Micro. Fungi," 4th edit., p. 223. 



Puccinia straminis, De Bary. Cooke, " Micro. Fungi," 4th 

 edit., p. 202. 



Aicidium asperifolii, Pers. Cooke, " Hdbk.," p. 541 ; '* Micro. 

 Fungi," 4th edit, p. 197. 



Exsiccati. 

 Cooke, i. 325 ; ii. 48. Vize, " Fungi Brit," 7 ; " Micro. Fungi 

 Brit," 431, 440, 441. 



