178 Cincinnati Society of Natural History. 
A, Pileus viscid. 
a. Stipe not marginate-bulbous, 1.. 
6. Stipe marginate-bulbous, 2, 3, 
B. Pileus dry, 4, 9. 
A, Pileus viscid. 
a, Stipe not marginate-bulbous. 
1. C. varius, Scheeff.—Pileus compact, hemispheric-explanate, even, 
viscid, discoid; the margin glabrous; the flesh white. Stipe solid, 
short, conic, appressed-flocculose; whitish. Lamelle emarginate, close, 
entire, purplish then argillaceous-cinnamon. 
In woods, in autumn. Pileus 2 in. and beyond in breadth, stipe 14- 
94 in. long, $ an inch thick above, 1 in. and beyond below. FPileus 
equal, not plainly virgate, encrusted, ferruginous-tawny, fibrillose-ap- 
pendiculate around the margin; stipe within at length cinerascent not 
yellowish. 
6. Stipe marginate-bulbous. 
2. C. cALocHRous, Weinm.—Pileus fleshy, convexo-explanate, glab- 
rous, viscid, unchangeable ; the flesh compact, white. Stipe solid, 
equal, fibrillose, white-yellowish; the bulb with a distinct margin. 
Lamellze emarginate, close, serrate, blue-purplish. 
In open beech woods. Pileus 3-4 in. across; stipe 1-3 in. high, 1 in. 
thick. Pileus commonly tawny, luteous around the margin, often 
spotted or soiled with dirt; the margin thin, involute, sometimes flexu- 
ous, not bent inward. Stipe equal, short, without any bluish color. 
3. C. CHRULESCENS, Fr.—Pileus fleshy, convex, explanate, viscid. 
Stipe solid, tapering upward, naked, blue changing to white; the bulb 
marginate. lLamellz attached, close, entire, at first pure dark blue. 
In hilly woods. Pileus 23-3 in. broad, stipe 3 in. high. The young 
plant sometimes all blue; pileus commonly argillaceous er brownish- 
yellow, when dry somewhat fibrillose; the flesh preserves its intense 
blue color when broken; the lamelle change to purple and at length to 
cinnamon; there is scarcely any odor. 
B. Pileus dry. 
4. C. viotacEus, Linn.—Dark violaceous. Pileus fleshy, obtuse, 
villous-scaly. Stipe bulbous, spongy, villous, violaceous-cinereous with- 
in. Lamelle attached, broad, thick, distant, darker. aoe 
In woods. Pileus 4 in. or more in diameter, stipe 4 in. high. 
Showy, inodorous and all of one color. Lamelle when young deep 
violet, almost black. 
