346 THE AGARICACEAE OF MICHIGAN 



328. Cortinarius subpurpurascens Fr. 



Epicrisis, 1S3G-38. 



Illustrations: Cooke, 111., PL 725. 



Ricken, Blatterpilze, PL 36, Fig. 3. (As C. purpurascens.) 



PILEUS 5-10 cm. broad, firm, campanulate, discoid or gibbous, 

 then expanded, at length depressed, viscid, tinged purple at first, 

 yellow-ochre to ochraceous tawny with smoky-brown stains, scarce- 

 ly virgate, glabrous, zoned by the decurved margin. FLESH soon 

 whitish, not changing to purple when bruised, compact. GILLS 

 adnexed-emarginate, crowded, rather narrow, purplish at first then 

 pecan-brown (Ridg.), becoming purplish when bruised, edge entire. 

 STEM 5-7 cm. long, 10-15 mm. thick, subequal above the rather 

 small depressed-marginate flattened bulb, pale violaceous, purplish 

 where bruised, violaceous within, cortinate-fibrillose, stuffed then 

 tubular. SPORES elliptical-oval, 8-9x5-6 niicr., rough. ODOR 

 slightly of radish after picking, somewhat pungent. TASTE mild. 



Gregarious to subcaespitose. On the ground under balsam and 

 spruce. North Elba, Adirondack Mountains, New York. Collec- 

 tion Kauffman. September, 1914. Infrequent. 



This species differs from C. purpurascens in its habit, its stuffed 

 to hollow stem and the almost immutable color of the flesh. The 

 gills and stem, however, change to purplish where bruised. It is C. 

 purpurascens in the sense of Ricken who seems to have exchanged 

 the Friesian names. It seems to be a species of the higher moun- 

 tains, and perhaps of the northern forests. 



329. Cortinarius aggregatus sp. nov. 



PILEUS 5-12 cm. broad, convex then subexpanded, obtuse and 

 usually irregular from crowding, at length undulate, glabrous or 

 white -pruinose when young, at first bright purple-blue to purplish- 

 gray, a1 maturity becoming smoky olive-gray and streaked, with a 

 viscid pellicle, margin at first incurved. FLESH thick, violaceous 

 then faintly olivaceous-gray to dingy white, not turning purple when 

 bruised. GILLS adnexed and rounded behind, then emarginate, 

 close, moderately broad, violet-purple at first, then gray to cinna- 

 mon. STEM IT cm. long, 10-20 mm. thick, rather short, solid, dry, 

 purplish, darker at base, the small bulb at the very first subemargi- 

 nate, qo1 depressed, disappearing during development. CORTINA 

 deep violaceous, rather copious, attached to bulblet at first, collaps- 



