THE AGARICACEAE OF MICHIGAN 

 '■■'Spores smooth. 



494. Inocybe glaber sp. nov. 



PILEUS 1.5-3.5 cm. broad, at first narrowly elliptic-oval, then 

 campanulate-expanded and umbonate, umbo glabrous-sublubricous, 

 sordid ochraceous-brown or livid-brown, at length darker on margin, 

 paler on umbo, at first glabrous, at length subfibrillose, moist and 

 shining, becoming soft and fragile in moist weather. FLESH thin. 

 GILLS almosl free, rather narrow, close, pallid then pale fuscous- 

 brown, edge white-fimbriate. STEM 3-5 cm. long, 2.5-4 mm. thick, 

 equal above the bulbillate base, glabrous, even, solid, white or pallid. 

 SPORES subreniform, smooth, 7-9x4-5 micr. CYSTIDIA none. 

 STERILE CELLS on edge of gills subcyliudrical to rounded-en- 

 larged a1 apex. ODOR nauseous to slightly radishy. 



Gregarious. On the ground, in low frondose woods. Saginaw, 

 Aim Arbor. July-September. Infrequent. 



This species approaches the genus Hebeloma in some of the 

 characters. 'The pileus becomes soft and watery at maturity and 

 is easily crushed, and the odor is obsoletely of radish. The shape 

 of the young pileus is however distinctly Inocybe-like, and the plants 

 were found growing with a number of other Inocybes. It seems 

 to approach Hebeloma discomorbidum Pk., but lacks the reddish 

 lini on the cap, the hollow stem and the spores of that species. It 

 is not truly viscid, even in moist weather, although the umbo is 

 somewhat lubricous. 



Hebeloma Fr. 



(From the Greek, hebe, the vigor of youth, and loma, a fringe, 

 referring to the presence of the cortina in the young plant.) 



Ochre-brown-sporedr Stem continuous with the pileus, without 

 a membranous annulus; fleshy to fibrous; partial veil in the form 

 "i a fibrillose cortina or lacking; no volva; gills adnexed or emar- 

 ginate; pileus viscid or subviscid, its margin at first incurved; 

 spores alutaceous, never ferruginous. 



Putrescent, terrestrial, often with a strong odor. They approach 

 the terrestrial Pholiotas on the " one hand, but without the 

 membranous annulus, and Inocybe, Flammula and Cortinarim? on 

 the other. Inocybe differs in its silky or fibrillose-scaly pileus and 

 verrucose-pointed cystidia; Flammula, in its non-emarginate, sub- 



