80 Cincinnati Society of Natural History. 
actly lateral, thick, scaly with sooty points. Lamelle determinate, 
close, yellow or pallid. Spores obloag, .005.002 mm. 
Upon fallen trunks, common, late in autumn and in the winter. 
Pileus commonly 2-3 in. across, yellowish-green or olivaceous, the cuti- 
cle at first viscid, the margin slightly involute. 
C’. Pileus at first resupinate, the lamelle concurrent to an excen- 
tric point, afterward the pileus reflexed, sessile. 
c. Pileus uniform, the cuticle not gelatinous. 
77. A, pinsitus, Fr.—Whitish. Pileus fleshy, soft, at first resupin- 
ate, afterward expanded, horizontal, sessile, silky-villous, undulate, 
hygrophanous. Lamelle broad, distinct. Spores ofa sordid color. 
“On trunks of trees, rare.’—/rves. Said to resemble 4. mollis, 
Scheff. Color of the pileus sordid when wet, pure white when dry. 
78. A. nicER, Schw.—Black. Pileus fleshy, tough, at first resupin- 
ate, then expanded, sessile, somewhat reniform, tomentose, glabrate 
toward the margin. Lamelle thick, broad, close; the edge cinereous. 
Spores white, oblong, .007.004 mm. 
In woods on fallen branches. Pileus about 2ths of an inch wide, and 
4 an inch long. I find a black Pleurotus which I take to be 
Schweinitz’s species; I do not have his description, and therefore sub- 
mit the one given. It is a very interesting species; it seems singular 
that the spores should be white. It is quite tough and revives well 
after being dried. 
d. Pileus with the cuticle viscid or gelatinous. 
79. A. mAsTtRucaAtus, Fr.—Pileus fleshy, the upper stratum gelatin- 
ous, at first resupinate, afterward expanded, sessile, lobed, scaly, 
mouse-gray. Lamelle broad, rather distant, whitish-gray. Spores 
oblong, oblique, .008<.005 mm. 
Upon falleu trunks in woods. Imbricated; pileus 1-4 in. across, 
lobed in the larger specimens, flaccid, rough, with hairs and rigid 
points intermixed; some ofthe hairs or points are blackish. Evidently 
rare; I haye found it but once. 
80. A. auerpus, Fr.—Pileus fleshy, at first resupinate, afterward 
expanded, reniform; the cuticle thin, viscid, glabrous, reddish brown. 
Lamellee rather broad, close, yellowish. | 
On rotten wood. Pileus about 1 in. across, reddish umber or 
cinereous, usually ceespitose and imbricated. 
