JMclampsora. 239 



want of success. Lest there should have been any error in the deter- 

 mination of the teleutospores, I tried them upon a plant oiRibesriibriim, 

 but with no result, the above-named botanists having stated tiiat an 

 allied Melampsora {M. hartigii) had for its jecidiospores, Cceoma 

 ribesii. 



Melampsora epitea. (Kze. and Schm.) 



Uredospores — Sori hypophyllous, rarL4y epiphyllous, generally very 

 minute, but sometimes larger, at length pulverulent, orange. 

 Spores globose, rarely subelliptical, echinulate, pale yellow, 20/^. 

 in diameter. Paraphyses very numerous, clavate, almost glo- 

 bose, hyaline, base acute, smooth, 40 x 22/x,. 



Teleutospores — Hypophyllous, very small, at first brown, then almost 

 black, subverruccxform, hemispherical, crowded. Spores cylin- 

 drical, pale brown, 30-34 x i2-i4/x. Epispore smooth, 2/j. 

 thick. 



Synonyms. 



Melampsora epitea. Thiim., " Monograph, der Weidenrust.,'"' 

 p. 17. 



Uredo epitea. Kze. and Schm., " Mycol. Heft.," i. p. 68. 



Vadium salicis. Sow., t. 39S, fig. i. 



Lecythea epitea, Le'v. Cooke, " Micro. Fungi," 4th edit., p. 221. 



On Salix viminalis. 

 July to November. 



Biology. — Rostrup and Nielsen, according to Schroter (" Kiypt. 

 Flor. Schl," vol. iii. p. 361), refer Cceoma ribesii to this species ; but, as 

 I understand the Danish botanists, they refer C. ?ibesii to J/, hartigii, 

 which is not a British species. 



Melampsora mixta. (Schlecht.) 



Uredospores — Sori on the leaves, hypophyllous, orange, crowded, 

 at length pulverulent, on the young branches large, erumpent, 

 and confluent, also on the inflorescence. Spores elliptical or 

 ovate, orange, echinulate, 14-18 X 12-15/x. Paraphyses very 

 abundant, as much as 50/x long, upper end swollen, capitate, 

 15-28/* wide, hyaline. 



Teleutospores — In small blackish crusts, hypophyllous. 



