=C. gangræno´sa= Fr.—_gangræna_, gangrene. =Pileus= fleshy, convex then plane, obtuse, whitish, at first sprinkled with white powder, then naked, variegated, streaked. =Gills= slightly decurrent, arcuate, crowded, dingy-white. =Stem= somewhat bulbous, soft, striate, spongy, solid. Stinking; large, flesh becoming blackish and variegated with black. Stem curved, sometimes excentric. Pileus whitish, here and there greenish, livid, etc. _Fries._ Var. _nigres´cens_ Lasch. Whitish; pileus thin, soft, at first convex, obtuse then plane, somewhat umbonate, and somewhat depressed; gills decurrent, very much crowded, narrow, stem solid, downy. =Pileus= 2–3 in. broad. =Stem= 1¼-1½ in. long, 2–3 lines thick. Odor rather sweet, taste unpleasant. _Cooke._ New Jersey, Haddonfield, pine woods. July to August. _McIlvaine._ This Clitocybe is in every way unattractive. It is not poisonous, but no one would care to eat it. (Plate XXVI.) [Illustration: CLITOCYBE MEDIA. One-half natural size. ] =C. me´dia= Pk.—_medius_, middle. Because intermediate between C. nebularis and C. clavipes. =Pileus= fleshy, convex, becoming plane or slightly depressed, dry, dark grayish-brown, the margin often wavy or irregular, flesh white, taste mild. =Gills= broad, subdistant, adnate or decurrent, whitish, the interspaces somewhat venose. =Stem= equal or but slightly thickened at the base, solid, elastic, not polished, colored like or a little paler than the pileus. =Spores= elliptical, 8×5µ. =Pileus= 2–4 in. broad. =Stem= 1–2 in. long, 4–8 lines thick. Mossy ground in deep woods. North Elba. September. This species is intermediate between C. nebularis and C. clavipes. In its general appearance, and in the character of the pileus and stem, it resembles C. nebularis, but in the character of the more distant gills and in the size of the spores it is nearer C. clavipes, of which it might perhaps be regarded as a variety. Two forms are distinguishable. In one the gills are more distant, slightly rounded behind, and adnate or abruptly terminated; in the other they are closer and more distinctly decurrent. The plant is edible. _Peck_, 42d Rep. N.Y. State Bot. I have known this fungus very favorably since 1883, and regard it as one of the best. I have seen it in the West Virginia mountains only, but it will probably be found in cool, shaded, high localities all over the country. Both it and the C. nebularis are well worthy of search. =C. viles´cens= Pk.—_vilesco_, of little value. =Pileus= convex, then plane or depressed, often irregular, glabrous, slightly pruinose on the involute margin, brown or grayish-brown, becoming paler with age, often concentrically rivulose. =Gills= close, adnate or decurrent, cinereous, sometimes tinged with dingy-yellow. =Stem= short, solid, sometimes compressed, grayish-brown, with a whitish tomentum at the base. =Spores= subglobose or broadly elliptical, 5–6.5µ; flesh whitish-gray, odor slight.