Resembling the brown form of _C. laccata_, differing in the elliptical, warted spores and glabrous pileus. [=sandicina=, Fr. P. convexo-plane, umbil. deformed, even, hygr. at length greyish-mealy; g. adnate, crowded, purplish, almost naked; s. hollow, unequal, glabrous, purplish. [=grumata=, Scop. P. campan.-convex, glabrous, cracked into squamules, disc depr. yellow; g. broadly adnate, distant, white; s. equal, pallid. =sadleri=, Berk. This is only an abnormal condition of _Hypholoma fasciculare_. OMPHALIA, Fr. I. COLLYBIARII. _Pileus expanded from the first, edge incurved._ * _Usually large, gills narrow, closely crowded._ =hydrogramma=, Fr. Livid white, white when dry. P. 4-7 cm. flaccid, thin, umbil. hygr. edge spreading, striate; g. closely crowded; s. 6-8 cm. base rooting; sp. ----. Differs from _Clito. phyllophila_ in polished stem. [=chrysoleuca=, Fr. P. very thin, umbil. shining, white, edge reflexed, substriate; g. yellowish; s. smooth, base thickened; sp. 8-10 x 4. [=ventosa=, Fr. P. infundib. glabrous, flaccid, flesh-colour, hygr.; g. white then flesh-colour; s. colour of p. [=dumosa=, Fr. P. very thin, plane, subumbil. rigid, deep brick-red; g. pallid; s. glabrous, colour of p. =detrusa=, Fr. P. 2-3 cm. rather fleshy, umbil. dark grey; g. with a decur. tooth, whitish; s. 2-3 cm. glabrous, dark grey; sp. ----. [=umbilicata=, Fr. P. umbil. then infundib. edge reflexed, even, hygr. tinged brown, then pale but disc darker; g. whitish; s. terete, apex striate with white fibrils; sp. 6-8 x 4. =maura=, Fr. P. 2-4 cm. thin, deeply umbil. hygr. striate, sooty brown, pale and silky when dry; g. shining white; s. 3-5 cm. rigid, straight, blackish; sp. 5-6 x 3-4. Differs from _Col. atrata_ in decur. narrow gills. [=lituua=, Fr. P. thin, plane, deeply umbil. hygr. even, bay then tan; g. grey; s. slightly wavy, grey. =offuciata=, Fr. P. 2-3 cm. plano-depr. flesh-colour then pale; g. colour of p.; s. 4-5 cm. glabrous, reddish; sp. ----. [=scyphoides=, Fr. Shining white. P. infundib. silky, unequal; g. narrow; s. subvillose, short; sp. 6 x 2. [=albula=, Q. P. umbil. thin, wavy, glabrous; s. solid, slender, incurved; g. adnato-decur. unequal, yellowish; sp. 10-12 long. [=Giovanellae=, Bres. P. thin, convex and umbil. then exp. and umbil., edge striate, silky-flocculose, grey then hoary brown; g. decur. crowded, colour of p.; s. glabrous, colour of p.; sp. 8 x 3. Differs from _Omp. scyphoides_ in hoary-grey colour of every part. ** _Medium size; gills rather distant, narrow, narrowed at both ends._ =chrysophylla=, Fr. P. 2-4 cm. thin, umbil. flaccid, floccose, brownish yellow then paler, edge reflexed; g. deep golden yellow; s. 3-5 cm. yellow; sp. 8 x 4. Differs from _O. Postii_ in the floccose pileus. =Postii=, Fr. P. 2-3 cm. thin, umbil. glabrous, orange; g. whitish; s. 4-6 cm. glabrous, yellow; sp. ----. var. _aurea_, Mass. P. very regular; g. slightly decur.; sp. 7 x 3.5.