370 THE AGARICACEAE OF MICHIGAN 



This subgenus is composed of species which have the stature of the 

 larger Telamoniae but in that sugbenus the pileus is hygrophanous 

 and subglabrous and when silky or fibrillose the fibrils are super- 

 ficial. A few species are included here which have a slight hygro- 

 phanous character. A few more are added which have a rather equal 

 stem, but show their affinity by the stout habit. One group possesses 

 a universal veil which persists on the stem in the form of an adnate 

 sheath or annulus. In my paper (Bull. Torr. Bot. Club., Vol. 32, 

 p. 305, 1905) this group was eliminated from the diagnosis of this 

 subgenus as there given, but further study has convinced me that 

 a more consistent and natural arrangement would be the recog- 

 nition of the universal veil under it. The smaller Inolomas grad- 

 ually approach the subgenus Dermocybe, so that the species of 

 these two groups cannot always be readily distinguished. The 

 stout clavate stem and scaly pileus throw a plant into the Inoloma 

 group, while the small size, the thin flesh of the pileus and the more 

 slender, equal stem indicate a Dermocybe. 



s<<-tion I. Universal veil manifest on the stem in the form of 

 an a]»[uessed sheath. 



*Gills at first violaceous, lilac or purplish. 



363. Cortinarius alboviolaceus Fr. (Edible) 



Syst. Myc, 1821. 



Illustrations: Fries, Icones, PL 151, Fig. 3. 

 Cooke, 111., PL 747 (faded), 

 (fillet, Champignons de France, No. 191. 

 Marshall, The Mushroom Book, PL 11 op. p. 65, 1905. 

 Hard, Mushrooms, Fig. 237, p. 295, 190S. 

 Ricken, Die Bliitterpilze, PL 44, Fig. 5. 



PILEUS 3-6 cm. broad, companulate at first, then convex and 

 broadly umbonate, dry, beautifully appressed silky, shining, varying 

 pale \ Lolaceous to caesious-buff, soon silvery-white and scarcely viola- 

 • > ous tinged, even, margin persistently decurved. FLESH thin on 

 margin, caesious or tinged violet, surface differentiated into a thin 

 layer, up to 15 micr. thick, composed of narrow, horizontal hyphae 

 about :: micr. in diam. GILLS at first adnate, then emarginate or 

 slightly subdecurrent, close, moderately broad, varying pale violet 



