424 THE AGARICACEAE OF MICHIGAN 



hollowed by grubs, brownish within, white-silky-fibrillose, some- 

 times annulate from the white veil. SPORES minute, narrowly 

 elliptical, 5-6.5 x 3-3.5 micr., smooth, pale clay-color in mass. ODOR 

 and TASTE mild. 



Gregarious or subcaespitose. On mosses under spruce, birch, etc. 

 North Elba, Adirondack Mountains, New York. Collection Kauff- 

 inan. Infrequent. 



The typical Friesian species is said to have a marked odor and 

 specimens from Sweden have larger spores. I have included it (in 

 the sense of Ricken) for comparison. In shape and size it imi- 

 tates C. hemitrichus. 



438. Cortinarius hemitrichus Fr. 

 Syst. Myc, 1821. 



Illustrations: Fries, Icones, PL 160, Fig. 2. 

 Cooke, 111., PL 825. 



Gillet, Champignons de France, Xo. 22(1. 

 Ricken, Die Bliitterpilze, PL 49, Fig. 5. 



PILEUS 2-5 cm. broad (rarely larger), cainpanulate, umbonate, 

 sometimes umbo is obsolete, umbo varying acute or obtuse, ground 

 color umber, watery -cinnamon or fuscous when moist, hygro- 

 phanous, more or less canescent from the white, superficial citrate 

 fibrils which at first cover it, sometimes glabrescent in age, color 

 lading to fuscous-gray or ochraceous-tan when dry, margin persist- 

 ently white-silky. FLESH concolor, thin. GILLS adnate then 

 emarginate, broad, close in front, subdistant behind, at first brown- 

 ish-gray to subochraceous, at length dark cinnamon, edge erose- 

 crenulate. STEM :',-<; cm. long, 2-5 mm. thick, equal, hollow, rigid, 

 more or less annulate at or below the middle by the white, appressed 

 ring, watery fuscous-brown within, fuscescent or brownish-fuscous 

 without, iibrillose below the annulus. SPORES elliptical, smooth, 

 6-8x15 micr. (rarely 0x5.5,. BASIDIA 30 x 7 micr., 4-spored. 

 ODOR ami TASTE mild. 



Anion- mosses or debris in moist places or swampy woods. New 

 Richmond. August-October. Not infrequent. 



An extensive study of many specimens showed considerable varia- 

 tion and after some experience it was possible to distinguish two 

 forms with respect to color. Both are conical when very small and 

 become distinctly umbonate. Form (A) had a dark fuscous cap at 



