171 THE AGARICACEAE OF MICHIGAN 



FLESH rather thin, whitish. GILLS adnate at first, then emar- 

 ginate, close, thin, rather broad, subventricose, whitish at first 

 tin ii rusty-cinnamon. STEM 4-10 cm. long, 2-4 mm. thick, slender, 

 equal, stuffed then hollow, subcartilaginous, fibrillose below, 

 slightly mealy at apex, pallid, at length dingy-brown. SPORES 

 '.i L2 \ 5-6 micr., variable, elliptical, smooth, alutaceous-cinnamon in 

 mass. CYSTIDIA none. ODOR strong, radishy or almost lack- 

 in-. TASTE slightly disagreeable. CORTINA scanty, fibrillose, 

 evanescent. 



(Dried: Pileus rusty-tan to brown, gills cinnamon-brown, stem 

 sordid brownish, i 



Gregarious. Under shrubbery or trees, on lawns, etc. Ann 

 Arbor, East Lansing. May, June, September, October. Infrequent. 



This species is closely related to E. mesophaeum. Its spores are 

 the same, and usually it has a similar stature. As far as I can see, 

 //. gregarium is distinguished from E. mesophaeum only by 

 its darker gills and spores, its truly convex pileus and 

 sometimes by its odor. Specimens identified by Peck as 

 his species were compared with the above. It has been 

 reported by Peck and others as occurring in October and 

 November although I have seen it also in early spring, a seasonal 

 distribution quite frequent in the case of certain species of mush- 

 rooms. Its cortina and general appearance suggest a Cortinarius ; 

 it is dearly not distantly related to that genus and I suspect has 

 been referred to it more often than to Hebeloma. On drying it be- 

 comes much darker than E. mesaphaeum, as the latter is diagnosed 

 above. It has slender sterile cells on the edge of the gills. 



499. Hebeloma pascuense Pk. 



N. Y. Si ale Mas. Rep. 53, 1900. 



fllustrations : Ibid, PL C, Fig. 21-27. 

 Hard, Mushrooms, Fig. 222, p. 274. 



; 2-5 cm . broadj convex then plane ^ obtus ^ vigcid when 



brownish-clay color, tinged rufous on disk, becoming pale 



■7), subhygrophanous, glabrous, innately streaked or variegated 



''." fibrils, margin whitish at first from the cortina. FLESH whit- 



GILLS adnexed, becoming ventricose and sinnuate, rather 



broad, close, pallid (hen pale ochraceous-cinnamon, edge white-nm- 



