358 THE AGARICACEAE OF MICHIGAN 



length somewhat dry and subshining, sometimes wrinkled in age 

 from the drying gluten, margin inrolled. FLESH pallid-white at 

 first, ;ii Length somewhat discolored, sublutescent. GILLS atten- 

 uate-adnate, then emarginate, close, not broad, at first whitish, then 

 alutaceous-cinnamon, edge eroded at maturity. STEM 4-9 cm. long, 

 10-20 mm. thick, spongy-solid, subfibrillose, white at first then aluta- 

 ceous, equal above the marginate or sometimes scarcely marginate 

 hiilh, which becomes oval at length. CORTINA white, scanty, 

 fugacious. SPORES subfusiform-elliptical, scarcely at all rough, 

 7-9x4-5.5 micr., pale, not becoming rusty. BASIDIA 25-30x7-8 

 micr. ODOR and TASTE mild. 



Gregarious. On the ground, in mixed woods, so far only collected 

 in the conifer regions of the State. Bay View, New Richmond, 

 September. Infrequent. 



The button stage is white or whitish throughout, but during 

 development it discolors more or less, assuming yellowish or rusty - 

 ochraceous shades. Our plants never become as deep orange-rusty, 

 so far as I have seen, as do the European plants. Specimens col- 

 lected near Stockholm, showed a tendency to change from white in 

 the button to tawny-orange in age. The species is distinct from 

 others in the peculiar delicate hoary-white covering of the young 

 plant, which sometimes remains on the surface of the pileus as 

 hoary spots even after expansion. This may be considered as a 

 form of universal veil, but is quite different in texture from the 

 universal veil of the first section. This hoariness is best seen when 

 plants are growing in dry weather, and reminds one of that of 

 Pholiota caperata. The spores and gills are rather pale for a Cor- 

 tinarius, and the species therefore approaches Hebeloma. 



344. Cortinarius intrusus Pk. (Edible) 

 Bull. Torr. Bot. Club, Vol. 23, p. 41G, 1896. 

 [llustration: Plate LXXIII of this Report. 



PILEUS 2.5-6 cm. broad, convex-expanded, soon plane and sub- 

 depressed, glabrous, whitish to dull clay-color, sometimes tinged 

 i;i\viiv-ochraceous or reddish, viscid when moist, even or radiately 

 wrinkled. FLESH whitish, thin. GILLS rounded behind, adnexed 

 or almost free, thin, close, not broad, whitish at the very first, soon 

 creamy-yellowish to tawny-ochraceous, finally umber-brown, edge 

 subcrenulate. STEM 3-6 cm. long, 4-10 mm. thick, stuffed to h ollow, 



