THE AGARICACEAE OF MICHIGAN 



OOxJ 



pallid. Forais which seem otherwise to belong here have a slight 

 alkaline odor. Solitary specimens appear as early as May around 

 Ann A rbor. I have found this species in the Adirondack Mountains, 

 and it agrees in all respects with our plants except that the spores 

 are slightly smaller, 6-7.5x6-7 micr., the size assigned to them by 

 Peck. 



596. Entoloma sericeum Fr. 



Epicrisis, L836-38. 



[llustrations : Cooke, 111., PL 320. 



Gillet, Champignons de France, No. 276. 

 Ricken, Blatterpilze, PL 72, Fig. 5. 

 Plate CVI of this Report. 



PILEUS 2-6 cm. broad, convex expanded, more or Jess umbonate, 

 glabrous, hygrophanous, umber-lroioi {moist), umbo darker, fad- 

 ing to grayish-brown and silky-shining (dry), striatulate on margin 

 when moist, margin at first regular then wavy. FLESH thin, con- 

 color, moist. GILLS adnexed-emarginate or broadest behind and 

 rounded-adnate, moderately broad, close to subdistant, gray or 

 grayish-white at first, edge entire. STEM 2-6 cm. long, 3-5 mm. 

 thick, stuffed then hollow, equal or tapering upward, sometimes 

 compressed or twisted, grayish-brown or tinged with gray, innate- 

 ly silky-fibrillose. SPORES sphoeroid, tuberculate-angular, 8-9.5 

 i inch apiculus) x 6-7 micr., apiculus prominent, deep flesh color in 

 mass. ODOR and TASTE farinaceous. 



Gregarious. On the ground, in open woods among grass or fallen 

 leaves. Ann Arbor. June-July. Infrequent. 



This species is characterized by its medium to small size, dark 

 brown cap, the presence of an umbo, the grayish gills and the 

 mealy odor. The umbo almost disappears. In Europe it is said 

 to be abundant and to grow in grassy pastures or meadows. I 

 have not found it in such a habitat. The surface of the cap has 

 a sheen almost velvety as shown in our illustration. E. griseum 

 differs in the truly convex eap without an umbo, and is usually 

 larger. The spores of these two species are alike, and there is some 

 question whether they do not run into each other. 



