Melampsorella. 247 
E-xsiccatt 
Cooke,i. 119. Vize, “Fungi Brit.,” 59; “Micro. Fungi Brit.” 226. 
On Vaccinium myrtillus. 
June to November. 
Melampsora ‘pyrole. (Gmelin.) 
Uredospores—Sori small, round, globose, yellow, solitary or aggre- 
gate on yellowish or brownish spots. Pseudoperidium at 
length perforate above. Spores elliptical or subpyriform, 
echinulate, orange-yellow, 26-33 X 13-15p. 
Synonyms, 
Schrot., Zoe. cit., p. 366. 
Ecidium pyrole. Gmelin., “ Linné Syst. Nat.,” vol. ii. p. 1473. 
Urelo pyrole. Grev., ‘‘ Flor. Edin.,” p. 440. Berk., “ Eng. 
Flor.,” vol. v. p. 378. Johnst., “ Flor. Berw.,” vol. ii. p. 199. 
Trichobasis pyrole. Berk., “ Outl.,” p. 332. Cooke, * Hdbk.,” 
p- 529; “Micro. Fungi,” 4th edit., p. 223. 
Exsicats. 
Cooke, 1. 438. 
On Pyrola rotundifolia and minor. 
August to October. 
B1OLOGY.—Only the uredospores have at present been observed, 
but from their general appearance this fungus can hardly be other 
than a Melampsora (Schroter). 
IV. MELAMPSORELLA. Schrot. 
Teleutospores undivided, formed inside the epidermal cells (intracellular), 
hyaline, confluent in wide-spreading masses. Promycelial spores hyaline. 
Uredospores echinulate, enclosed in a pseudoperidium. 
Melampsora cerastii. (Pers.) 
Uredospores—Sori pustulate, scattered, small, round. Pseudoperi- 
dium hemispherical, persistent, apically perforate. Spores sub- 
globose, ovate or clavate, echinulate, yellow, 20-25 x 14-204. 
