80 Cincinnati Society of j^Tatuval History. 



actly lateral, thick, scal}^ with sooty points. Lamellae determinate, 

 close, 3'ellow or pallid. Spores oblojg, .005X-002 mm. 



Upon fallen trunks, common, late in autumn and in the winter. 

 Pileus commonly 2-3 in. across, 3'ello\vish-green or olivaceous, the cuti- 

 cle at first viscid, the margin slightly involute. 



C, Pileus at firnt resupinate., the lamella', concurrent to an excen- 

 fric point, afterward the pileus reflexed, sessile. 



r. Pileus uniform, the cuticle not gelatinous. 



77. A. pixsiTUS, Fr. — Whitish. Pileus fleshy, soft, at first resupin- 

 ate, afterward expanded, horizontal, sessile, silky- villous, undulate. 

 hygro|)hanous. Laniclhv broad, distinct. Spores of a sordid color. 



"On trunks of trees, rare." — Fries. Said to resemble A. mollis, 

 Schffilf, Color of the pileus sordid when wet, pure white when dry. 



78, A. NiGEK, Schw. — Black. Pileus fleshy, tough, at first resupin- 

 ate, then expanded, sessile, somewhat reniform, tomentose, glabrate 

 toward the margin. LamelliE thick, broad, close; the edge cinereous. 

 Spores w?iite, oblong, ,007 X -004 mm. 



In woods on fallen branches. Pileus about £?ths of an inch wide, and 

 ■k 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 ciscid or arlatinous. 



70. A. MASTiiuCATUs, Fr. — Pileus fleshy, the upper stratum gelatin- 

 ous, at first rosupinate, afterward expanded, sessile, lobed, scaly, 

 mouse-gray. Jiiimella; broad, rather distant, whitish-gray. Spores 

 oblong, oblicpie, .OOSX-OOf) min. 



Upon fallen trunks iu woods. Imbricated; pileus 1-4 in. across, 

 lobed in the larger specimens, flaccid, rough, with hairs and rigid 

 points intermixed; some oftlu; hairs or points are blackish. Evidently 

 rare; I li:ivc found it hut once, 



80, A. Ai.<iii>us, Fr, — I'ilcus lleshy, at first rcsupinate, afterward 

 expanded, reniform; the cuticle thin, viscid, glabrous, reddish brown. 

 Lamella' ratlier broad, close, yellowish. 



On rotten wood. Pileus al)out 1 in. across, reddish umber or 

 cinereous, usually ciespitosc Jind imbricated. 



