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THE AGARICACEAE OF MICHIGAN 



Gregarious. On the ground in low, frondose woods. Ann Arbor. 

 September-October. Infrequent. 



Known by the white color of all its parts, although the pileus may 

 become buff in age and sometimes the bulb is discolored somewhat 

 by rusty hues. It differs from pallid forms of G. multiformis in its 

 spores and larger bulb. 



SUBGENUS PHLEGMACIUM: Stem dry, firm, exposed from 

 the beginning , becoming clavate-bulbous to equal, never marginate- 

 bulbous; cortina superior, collapsing on the upper or medium por- 

 tion of the stem. Pileus with a viscid pellicle. 



This includes the sections "Cliduchii" and "Elastici" of Fries. 

 Tin- development from the "button" stage is very different from 

 that of the subgenus Bulbopodium. The stem is evident from the 

 first, and the cortina is necessarily attached differently, connecting 

 stem and margin of pileus. A universal veil, similar in structure to 

 that of the preceding subgenus, may be present in the young stage 

 and in such cases persists under favorable conditions as delicate 

 shreds or as a closely adnate sheath to the lower part of the elon- 

 gated stem. Of the European species which have this veil, e. g. G. 

 cumatilis Fr., G. varicolor Fr., G. triumphans Fr., etc., only one 

 has been with certainty observed in this country. Details on this 

 point, with respect to American species, are also not at hand, so that 

 I am compelled to arrange our species on a merely temporary basis. 

 The number of Michigan species which belong to this subgenus that 

 have so far been observed are relatively few, and, except for 

 the type specimens of Peck's species which have been examined, I 

 have seen few collections that can be placed here. 



• 



Section I. Universal veil clearly manifest. 



346. Cortinarius triumphans Fr. 

 Epi.risis, 1836-38. 



Illustrations : Fries, Icones, PI. 141, Fig. 1. 

 Gillet, Champignons de France, No. 252. 

 Cooke, 111., PL 092. 

 Kick on. Blatterpilze, PL 41, Fig. 2. 



PILEUS o-10 cm. broad, convex-plane, obtuse, viscid, spotted with 

 superficial pal dies of the veil, or glabrous and appressed-subtomen- 

 tose on drying especially on disk, even, apricot-yellow to ochraceous- 



