Seaver: Hypocreales of North America 67 



mersed in the subicnlnm ; asci cylindrical or clavate, 8-spored ; 

 spores fusiform, simple, smooth or externally roughened. 



Type species : Sphaeria viridis Albert. & Schw. 



Distinguished from Hypomyces by the simple spores. 



Stroma dirty greenish. 

 Stroma not greenish. 



Spores comparatively small, 15-20 mic. long. 

 Stroma lemon-yellow. 



Stroma white, becoming pallid or latericeous. 

 Spores comparatively large, 30 mic. or more long. 

 Spores broad fusiform, rough, apiculate. 

 Stroma dull orange ; on Cantharellus. 

 Stroma pallid. 

 Spores narrow fusiform, smooth, non-apiculate. 



I. Peckiella viridis (Albert. & Schw.) Sacc. Syll. Fung. 9: 



944. 1 89 1 



Sphaeria viridis Albert. & Schw. Conspect. Fung. 8. 1805. 

 Hypomyces viridis Berk. & Broome, Ann. Mag. Nat. Hist. 15: 

 22. 1865. 



Stroma effused, covering the hymenium and stem of the host, 

 dirty greenish or greenish-black; perithecia thickly gregarious 

 and immersed or partially immersed in the subiculum ; asci 

 cylindrical or slightly clavate, 8-spored, 175-180 X 5-6 mic; 

 spores i-seriate or partially 2-seriate above, fusiform with a long 

 apiculus at each end, 25-35 X 5 mic becoming delicately verru- 

 cose, simple but occasionally appearing obscurely and irregularly 

 septate {pi. 21, f. i). 



On the hymenium and stem of agarics, Lactaria and Russula. 



Type locality : Europe. 



Distribution : New England to N. Carolina. 



Illustrations: Albert. & Schw. Conspect. Fung. pi. 6, f. 8; 

 Phill. & Plow. Grevillea 8: pi. 130, f. i; Plow. Grevillca 11: 

 pi. 152, f. 2. 



Specimens examined: Pennsylvania, Everhart; (Vermont?), 

 Burlingham. 



The species is distinguished externally by its dark greenish 

 color and internally by the very large, rough, simple spores. 



