Var. _petasa´tus_ Fr. =Pileus= 3–4 in. across, flesh rather thick, campanulate then expanded, umbonate, grayish-white, very smooth, with a viscid cuticle, at length striate to the middle. =Gills= free, ½ in. and more broad, crowded, becoming dry, white then reddish. =Stem= 4–5 in. long, ½-⅔ in. thick, rigid, very slightly and equally attenuated from the base, whitish, fibrillosely striate, solid. On heaps of straw and dung, sawdust, etc. Color verging on bay when old. Stem and margin of gills at length with a tawny tinge. _Fries._ Haddonfield, New Jersey, Bell’s Mill, sawdust, 1890; Mt. Gretna, Pa., August, 1898, among sawdust from ice-house. =Caps= 6 in. across. =Stem= easily split, exterior hard, fibrillose, streaked, whitish, shining, stuffed with cottony fibers. =Spores= dark pink. _McIlvaine._ Equal to P. cervinus. =P. umbro´sus= Pers.—shady, from its dark color. =Pileus= fleshy, at first bell-shaped, then convex or expanded, _roughly wrinkled_ and more or less villose on the disk, fimbriate on the margin, _blackish-brown_. =Gills= broad, somewhat ventricose, at first whitish, then flesh-colored, _blackish-brown and fringed or toothed on the edge_. =Stem= solid, colored like or paler than the pileus, fibrillose or villose-squamose. =Spores= elliptical, 8×5µ. Decaying woods and swamps, especially of pine, both in shaded and open places. Not rare. _Peck_, 38th Rep. N.Y. State Bot. =Spores= broadly elliptical, smooth, 6–7×5µ; cystidia ventricose, 65–75×18–20µ _Massee_. New York, _Peck_, Rep. 32, 38; West Virginia, Pennsylvania, North Carolina, New Jersey, frequent on decaying logs, stumps, pine and other woods. _McIlvaine._ At times the caps are a deep sepia-brown. It is readily distinguished from P. cervinus by the wrinkled, downy disk of the cap and the gills having dark-brown edges. Smell rather strong. Professor Peck says he has not seen it with the margin fimbriate. Neither have I, though this is prominent in the European species. P. umbrosus is a fine species, equal in every way to P. cervinus, which is seldom excelled. Caps only are tender. =P. pelli´tus= Fr. =Pileus= 1–2 in. across. =Flesh= thin, soft, white, convex then plane, somewhat umbonate, regular, silky-fibrous, dry, white. =Gills= free, rounded behind, crowded, 1½ line broad, ventricose, white then flesh-color, margin slightly toothed. =Stem= about 2 in. long, 2–3 lines thick, slightly thickened at the base, even, glabrous, shining, white, stuffed. =Spores= elliptical, smooth, 10×6µ. Among grass at the roots of trees, etc. Our only Pluteus with a pure white, even pileus and stem. Superficially resembling Entoloma prunuloides, which differs in the broadly emarginate—not free—gills, and in the strong smell of new meal. _Massee._ Mt. Gretna, Pa., October, 1898. _McIlvaine._