THE AGARICACEAE OF MICHIGAN 



varies considerably in intensity. It is probably widely distributed, 

 l,in I Lave few collections. The figure of Patouillard (Tab. Analyt, 

 No. Ill) shows the presence of cystidia and belongs elsewhere. 



477. Inocybe destricta Fr. (minor) 



Epicrisis, 183G-3S. (As var. I. rimosa.) 



Illustrations: Fries, Icones, PI. 108. 

 Cooke's 111., PI. 387. 

 Ricken, Die Blatterpilze, PI. 29, Fig. 9. 



PILEUS 24 cm. broad, conic-campanulate, then expanded-um- 

 bonate, at length depressed around the darker abrupt umbo, dark 

 brown, rufous-brown or ochraceous-brown, umbo persistently dark 

 (■Instant or umber, fibrillose at first, at length 'lacerate-scaly or 

 rimose, or both; FLESH thin, whitish. GILLS sinuate-adnexed or 

 deeply emarginate, uncinate, ventricose, medium broad, close to sub- 

 distant, whitish then pale brownish-ashy, edge white-fimbriate. 

 STEM 2.5-5 cm. long, 2.5-5 mm. thick, equal, scarcely bulbillate, 

 pa 1 1 ill. tinged with rufous, varying flocculose-fibrillose to glabrous, 

 apex pruinate, solid, white within. SPORES subreniform, inequi- 

 lateral, smooth, 8-10 x 5-5.5 micr. CYSTIDIA abundant on sides and 

 edge of gills, ventricose, stout above, apex crystallate, 50-65 x 15-18 

 micr. ODOR at first slight then somewhat nauseous. 



Gregarious. On the ground in coniferous forests of pine and 

 hemlock. Bay View, New Richmond. August-September. Fre- 

 quent. 



This is a variable plant, and when developed under moist weather 

 conditions the cap becomes lacerate-scaly and often excoriate in 

 part, and is then non-rimose; in dry weather it becomes markedly 

 rimose and less scaly. When young or freshly expanded the pileus 

 is usually densely fibrillose and its edge minutely appendicular 

 by the remains of the rather copious, white cortina. At first the 

 pileus is .lark brown, but in age it becomes somewhat ochraceous- 

 Inuwn beyond the umbo. The faint tinge of rufous on the older 

 st.-ms is a well-marked character, duly noted by Fries. The spores 

 are markedly subreniform in one view, short fusiform-ovate in the 

 other view. Our collections contain mostly plants with a rather 

 longer stem and narrower cap than shown by the figures of Cooke 

 • nil I Pries. It is easily confused in some of its forms with I. rimosa, 

 l»ut differs in possessing abundant cystidia. Occasionally a troop 



