I.—DISCIFOR´MES. * _Pileus gray or brownish._ =C. nebula´ris= Batsch.—_nebula_, a cloud. (Plate XXIV, fig. 7, p. 82.) The Clouded clitocybe, Clitocybe nebularis, takes its name from the clouded-gray appearance of its thick cap, which is at first convex, but when mature, either flat or a little depressed. Its flesh is white, thickest in the middle, and in a vertical section is seen to taper rapidly downward into the stem. The gills are close together and rather narrow for the size of the plant. They are white or yellowish-white. The stout solid stem usually tapers upward from the base and is whitish. The cap is two to four inches or more broad, the stem one to two inches long and about half an inch thick. The Clouded mushroom grows in woods, and sometimes forms large tufts or clusters among fallen leaves. It is found in autumn, but is not very common in this country. Authors differ in their estimate of the edible qualities of this mushroom, but the more recent ones generally agree in classing it as edible. “Mushrooms and Their Use,” _C.H. Peck_. =Spores= 4.5×3µ _Cooke_; elliptical 6×3.5µ _Massee_; 3×4µ _W.G.S._ There has been great diversity of opinion as to the edibility of this species on the continent. Cordier and a friend suffered from it. Paulet counseled mistrust. This fungus is quite common in the West Virginia mountains and in some parts of Pennsylvania and New Jersey, where I have found it. It is, however, limited to localities. It is one of my favorites, being of marked flavor and agreeable consistency. I have not known it to harm anyone. (Plate XXV.) [Illustration: CLITOCYBE CLAVIPES. About two-thirds natural size. ] =C. cla´vipes= Pers.—_clava_, a club; _pes_, a foot. =Pileus= 1½-2½ in. across, rather convex at first, soon plane, at length almost obconical, very obtuse, even, glabrous, dry, sometimes all one color, brown, sooty, livid-gray, etc., sometimes whitish towards the margin, very rarely entirely white. =Flesh= loose in texture, white, thin at the margin. =Gills= deeply decurrent, continued down the stem as straight lines, rather distant, flaccid, quite entire, broad, entirely and persistently white. =Stem= 2 in. long, base ½ in. and more thick, conically attenuated upward, rather fibrillose, livid, sooty, solid, spongy within. =Spores= elliptical, 6–7×4µ. In woods, especially pine. Resembling C. nebularis in color, but quite distinct. Smell pleasant, entire substance soft and elastic. _Fries._ =Spores= elliptical, 6–7×4µ _Massee_; sub-ellipsoid, 5–7×3–4µ _K._; 6×8µ _W.G.S._ Found in pine woods of New Jersey, and under spruce in West Virginia. Its substance is spongy, therefore does not stew well. Cooked in any other way it is delicate and of excellent flavor.