366 



THE AGARICACEAE OF MICHIGAN 



ous below. SPORES subglobose to oval, rough-punctate, 7-8 x 5-6.5 

 micr. BASIDIA 30 x 7 micr., 4-spored. ODOR slight. TASTE of 

 pellicle or pileus bitter. 



Gregarious. On the ground in mixed and frondose woods. Aug- 

 ust-October. Ann Arbor, Marquette, New Richmond. Infrequent. 



Tbis is a variable species, and was placed by Fries under tw r o 

 names: G. infractus and G. anfractus. Bresadola combined these 

 and gives an excellent description. Ricken ( Blatterpilze, p. 144) 

 lias again attempted to segregate them. There is no doubt that 

 forms occur which might be kept apart on the basis of different 

 shades of color, stature, etc. Our plants often have narrow adnate 

 -ills but luxuriant specimens occur with broad gills. In all forms 

 which seemed to belong here, the pellicle of the pileus was bitter. 

 According to Ricken this would be G. subsimile (Pers), but the 

 colors do not agree with that. In all these forms the spores are 

 said to he practically of the same size and shape. Further study on 

 our plant is necessary if they represent different species. 



356. Cortinarius olivaceus Pk. 



X. Y. State Mus. Rep. 24, 1S72. 



* 



"PI LETS :>-5 cm. broad, convex then expanded, glabrous, viscid, 

 dark brown with a greenish or olivaceous tinge. FLESH grayish. 

 GILLS close, rather broad, at length ventricose, dark olivaceous at 

 first, then cinnamon. STEM 6-8 cm. long, 6-10 mm. thick, equal, 

 stuffed to hollow, white-violaceous, thickened below ivith an oval 

 bulb." SPORES elliptical, very rough, tuberculate, 10-12.5 x 6-7.5 

 micr. 



On the ground, in woods. New York. September. A study of the 

 type-specimens and accompanying drawings show that this species 

 is lo be placed in the present subgenus. The spores differ markedly 

 from (hose of C. infractus and G. herpeticus, both in size and shape. 

 li approaches G. hileofuscus more closely. 



357. Cortinarius longipes Pk. 



X. V. Si ale .Mus. Rep. 26, 1874. 



"PILEUS 5-8 cm. broad, convex to expanded, slightly fibrillose, 

 viscid, yellowish or pale ochraceous. GILLS close, plane, broion- 

 ish-olivaceous at first, then cinnamon. STEM elongated, 10-15 cm. 



