THE AGARICACEAE OF MICHIGAN 



606. Clitopilus undatus Fr. 

 (Sense of Patonillard.) 



Epicrisis, 1836-38. 



[llustrations : Fries, Icones, PI. 90, Fig. 4. 

 Patonillard. Tab. Analyt, No. 428. 

 Cooke, 111., PI. 486. 



PILEUS 1.5-3.5 cm. broad, fragile, deeply umbilicate to subin- 

 fundibuliform, dark smoky-gray (moist), fading, opaque, silky when 

 dry, splitting radially in age, sometimes obscurely zonate, margin 

 wavy, fleshy, concolor. GILLS decurrent, broad in the middle, 

 thin, close, dark cinereous, at length tinged by the spores, 

 edge entire. STEM short, 1.5-2 cm. long, 1.5-3 mm. thick, equal, 

 terete, solid, even, tough-elastic, glabrous, brownish-ashy to pale 

 brown. SPORES irregularly subglobose-oval, angular, 7-9x6-6.5 

 inicr., nucleate, reddish-flesh color in mass. CYSTIDIA none. 

 ODOR none. 



On mossy ground or much decayed wood, hi open frondose woods. 

 Ann Arbor. August. Infrequent. 



Known by its dark gray gills, lack of odor and angular spores. 

 Ricken refers it to Paxillus and assigns to it smooth spores, in which 

 he differs from other authors. Our plants had a solid stem while 

 Fries describes the stem with a cavity. In all other respects it 

 agrees well with the Friesian description. Patouillard reports the 

 stem either solid or hollow and doubtless he had our species. 



607. Clitopilus micropus Pk. 



X. V. Stale Mas. Rep. 31, 1879. 



[llustration : N. Y. State Mus. Bull. 54. PL 78, 1902. 



PILEUS small, 1-2 cm. broad, fragile, convex then depressed, um- 

 bilicate, silky, grag, usually slightly zoned on margin, margin de- 

 curved. GILLS adnato-decurrent, narrow, narrowed in front and 

 behind to a point, close, gray then salmon-colored. STEM short, 

 L-2 fin. long, -'.', mm. thick, solid or with a slight cavity, pruiaose, 

 gray, white-mycelioid at base. SPOKES elongated angular-tuber- 

 culate, 9-10x5-6 micr., nucleate, pale salmon color. ODOR and 

 TASTE farinaceous. 



(Dried: Dark gray.) 



