442 THE AGARICACEAE OF MICHIGAN 



***Stem yellowish or ochraceous. 

 462. Cortinarius acutus Fr. 



Syst. Myc, 1821. 



Illustrations: Cooke, 111., PL 845. 



Quelet, in Grevillea, Vol. VII, PL 112, Fig. 5. 

 Engler and Prantl, Pflanzenfamilien, Part I, Sect. 1,** Fig. 

 118 A. 



PILEUS 5-25 mm. broad, conical or conic-campanulate with acute 

 umbo, striate to the umbo and watery rufous-cinnamon when moist, 

 pale alutaceous when dry, hygrophanous, minutely silky, margin 

 white-cortinate, glabrescent. FLESH submembranaceous, yellowish. 

 GILLS adnate seceding, close or scarcely subdistant, thin, not broad, 

 pale ochraceous at first then ochraceous-cinnamon, edge entire. 

 STEM 4-8 cm. long, slender, 1-2 mm. thick, equal, flexuous, tubular, 

 yellowish at first becoming paler, silky from the evanescent white 

 cortina, glabrescent. SPORES elliptical, smooth, 7-9.5 x 5-5.5 micr. 



In moist places, swamps, etc. September-October. Specimens 

 from Massachusetts by G. E. Morris. 



Distinguishable from the preceding two by the clearly striate 

 pileus and yellowish stem when fresh and moist. It is easily mis- 

 taken for a Galera. 



Inocybe Fr. 



(From the Greek is, a fibre, and kybe, a head, referring to the 

 silky-fibrillose covering of the pileus.) 



Ochre-brown-spored. Pileus conical or campanulate at first, 

 Innately silky, fibrillose or fibrillose-scaly ; the cuticle continuous 

 to the stem in the form of a more or less evanescent, fibrillose cor- 

 tina. Volva none. Gills and spores pale and sordid; edge of 

 gills provided with cystidia or saccate, sterile cells. 



Putrescent, mostly terrestrial, often with a characteristic odor. 

 Mostly small or mediant-sized plants; intermediate between He- 

 belonia and Cortinarius, lacking mostly the viscid pileus of the 

 former, and the delicate, cobwebby cortina and the darker brown 

 or rusty spores of the latter; formerly joined with the genus 

 Hebeloma. They are usually omitted from the list of edible species 

 on account of their mostly disagreeable odor and taste. Some 



