That part of the plant which readily breaks away from the stem is tender and of good flavor. The remainder is tough. =C. flac´cida= Sow.—_flaccidus_, limp. =Pileus= 2–3 in. across, flaccid, orbicular, umbilicate, umbo persistently absent, margin spreading, arched, glabrous, even, rarely cracking into minute squamules, tawny-rust colored, shining, not becoming pale. =Flesh= thin, pallid, rather fragile when fresh, but quite flaccid when dry. =Gills= deeply decurrent, arcuate, crowded, narrow, about 1 line broad, white, then tinged yellowish. =Stem= imperfectly hollow, elastic, tough, 1–2 in. long, 2–3 lines thick somewhat equal, polished, naked, reddish-rust color, base thickened, downy. =Spores= subglobose, 4–5×3–4µ. Among leaves, etc. Gregarious, stems often grown together at the base. Sometimes solitary and regular. Summer and autumn. _Massee._ =Spores= subglobose, 4–5×3–4µ. Found in 1886 in West Philadelphia—oak woods. Since in New Jersey, North Carolina, and interior of Pennsylvania. Edible. Well cooked it compares favorably with C. infundibuliformis and others of like texture. *** _Pileus shining white._ =C. cati´na= Fr.—_catinus_, a bowl. =Pileus= 2 in. broad, at first _white, in no wise hygrophanous_, then passing into pale flesh-color during rain, and into tan-color in dry weather, _fleshy_, moderately thin, plane then funnel-shaped, always obtuse, even, _smooth_. =Flesh= thin, _flaccid_, white. =Stem= 3 in. long, 1½ in. thick, _stuffed_, internally spongy, _elastic_, tough, thickened and tomentose at the base. =Gills= decurrent, _straight, descending_, not horizontal, broad, not much _crowded_, persistently white. _Fries._ Ray Brook, Adirondack mountains. August. The pileus is at first white, but in wet weather it becomes pallid or discolored with age. The plants were found growing among pieces of bark of arbor vitæ lying on the ground. _Peck_, 43d Rep. N.Y. State Bot. Quite common in West Virginia, Pennsylvania, New Jersey. Woods among dead leaves. August until frost. Edible. Excellent in flavor and quality. _Series B._ IV.—CYATHIFOR´MES. =C. cyathifor´mis= Bull.—_cyathus_, a cup; _formis_, form. =Pileus= 1½-3 in. across, flesh thin, plano-depressed when young, then infundibuliform, even, glabrous, hygrophanous, rather slimy and usually dark brown when moist, becoming pale and opaque when dry, undulate in large specimens, the margin remains involute for a long time. =Flesh= watery, similar in color to the pileus, splitting. =Gills= adnate, becoming decurrent with the depression of the pileus, joined behind, distant, grayish-brown, sometimes branched. =Stem= spongy and stuffed inside, elastic, at length often hollow, 2–4 in. long, 3–4 lines thick, attenuated upward, brownish-fibrillose, fibrils forming an imperfect reticulation, colored like the pileus or a little paler, apex naked (not mealy), base villous. _Massee._