Postelsia 239 
spores needle-shaped, multiseptate, 45-58 x 
2- mic. 
2. Mitrula musicola Henning. Oefvers. af 
K. Vet.-Akad. Forh. 1885. 
Laggan, Alberta, Canada, Aug., 1903. 
Lone. 257: 
Growing upon Webera nutans  Schreb. in 
moist spruce and balsam woods at about 7,000 
feet elevation. 
@espitose, erect; pileus yellowish to tan- 
colored, obtuse, slightly Morchella-like, with 
a tendency to be ribbed or rugose, glabrous, 
abouten ‘mm. Jong; stipe: liehter colored to 
whitish, glabrous, solid, about to mm. long; 
spores elliptical, bent, non-septate, colorless, 
in twO rows in ascus, up to 10-12 X 2-3 mic.; 
paraphyses filiform, up to 2 mm. broad. 
This seems to be M. musicola Henning 
rather than J/. rehmii Bresad. on account of its 
smaller size and only slightly rugose pileus. Dr. 
Rehm considers that it is either J/. musicola 
Henning or WM. gracilis Karst., but he prefers 
the former. 
