198 Cincinnati Society of Natural History. 
wide above, tapering downward to a narrow nearly sessile base. This 
and dealbatus are two fine new species first discovered by Mr. Lea. 
6. P. porsALis, Bosc.—Pileus fleshy-coriaceous, at first resupinate, 
afterward expanded, sessile, somewhat reniform, tomentose, luteous, 
expallent. Lamelle broad, rather distant, orange-tawny. Spores 
colored like the lamelle. 
On stumps and trunks. Pileus 14-3 in. broad. Often imbricate and 
sessile or sometimes slightly stipitate. This I have no doubt is the 
same plant as Agaricus nidulaus, Fr. I have observed it carefully in 
every stage and it agrees perfectly with the figure and description in 
Fries’ Icones, except the substance is leathery and persistent, not 
putrescent. 
Genus XIII.—Troeta, Fr. 
Lamellee fold-like, crisped, the edge obtuse. Spores white. 
1. T. orispa, Pers.—Tough, cupular-reflexed, lobed, villous, reddish- 
yellow. Lamelle fold-like, forked, crisp, whitish or lavender. 
Upon branches of beech, etc., rather scarce; late in autumn and 
during the winter. Pileus 4-1 in. broad, sometimes whitish in color, 
sessile. 
Genus XIV.—ScHIZoPHYLLUM, Fr. 
Pileus not fleshy, dry. Lamellz coriaceous, flabelliform-branched, 
joined above by a tomentose pellicle, bifid, the edge longitudinally 
split. Spores white. 
1. S. commune, Fr.—Pileus adnate behind, somewhat extended, 
simple and lobed. Lamelle gray then brown-purplish, the two 
divisions of the edge spreading or revolute. Spores nearly globose, 
very small, .0025 mm. in diameter. 
Growing upon trunks and branches; very common, in this region, 
seeming to flourish best in the mild wet weather of winter. Pileus 1- 
14 in. broad, white or gray, tomentose, sessile or with a short lateral 
stipe; the margin even or variously lobed and split. It grows in all 
the regions of the earth. 
Genus XV.—LEnzitTEs, Fr. 
Pileus corky or coriaceous; the texture dry, floccose. Lamellz cori- 
aceous, firm, of like texture with the pileus. Spores white. 
1. L. peruLtina, Linn.—Pileus dimidiate, sessile, persistent, corky- 
