[=calophylla=, Pers. P. hemispher. umbil. sooty umber; g. decur. reddish-purple; s. narrowed upwards, rather thick, somewhat viscid, colour of p., at first purplish, shining. =rhodocylix=, Lasch. P. 1-1.5 cm. umbil.-infundib. remotely striate when moist, somewhat fuscous, flocculose and grey when dry; g. very distant, broad; s. 2-3 cm. glabrous, grey; sp. rough, 10. [=rusticoides=, Gill. P. convex, umbil. striate, glabrous, hygr. brown, paler when dry; g. decur. thick, distant, forked, rufous-brown; s. slender, colour of p. =flosculus=, W. G. Sm. P. 1.5-2 cm. deeply umbil. with crystalline particles, irreg. black brown, whitish with age; g. decur. rather wavy; s. 2 cm. reddish; sp. rough. Probably introduced. =acus=, W. G. Sm. P. 1-1.5 cm. deeply umbil. densely pruinose, white, edge striate and incurved; g. thick, distant; s. 2-3 cm. smooth, whitish; sp. rough. Probably introduced. [=tristis=, Bres. Smell like spirit-of-wine. P. convexo-subcampan. umbil. edge crisped, striate, moist, glabrous, brown; g. distant, thick, broad, arcuato-decur. fleshy-brown; colour of p. glabrous; sp. rough, 8-10. CLAUDOPUS, W. G. Sm. [=translucens=, D. C. P. subsessile, thin, orbicular, wavy, pellucid, white tinged reddish; g. free, pallid then reddish lilac; sp. 4-6 long. =variabilis=, Pers. P. 1-1.5 cm. resupinate, then reflexed, tomentose, white, attached by a very short incurved downy stem which disappears when the pileus turns over; g. radiating from an excentric point, distant, white then pink; sp. 3 x 2. var. _sphaerosporus_, Pat. P. white, tomentose; g. paler than type; sp. globose, echinulate, tinged red. =depluens=, Batsch. P. 1-1.5 cm. more or less convex, edge incurved, resupinate then reflexed, white or tinged reddish, usually with a very short downy s.; g. broad, ventricose, grey then tinged rufescent; sp. glob. rough, 5-6. (9-11 x 6-8 Sacc.) Differs from _C. variabilis_ in globose, warted s. [=inaequabilis=, Sacc. Entirely rusty, stipitate; p. oblique, almost glabrous; g. sinuato-free, ventricose; s. very excentric, short, base dilated, incurved; sp. 8 x 6. [=macrosporus=, Pat. and Doas. P. exp. depressed at an excentric point corresponding to insertion of stem, reddish brown, striate up to depression; g. broad, distant, reddish; s. short, excentric, enlarged into a flat plate at base; sp. 15-18 x 12. =byssisedus=, Pers. P. 1-2 cm. resupinate then horizontal, reniform, plane, downy, grey then pale; g. adnato-decur. greyish-white, reddish with the spores; s. incurved, downy, base surrounded with white fibrils; sp. glob. rough, 6-7. Differs from _Pleurotus applicatus_ by presence of s. and pink sp. [=Zahlbruckneri=, Beck. P. resupinate then reflexed, sessile, reniform, shining white, downy; g. radiating, reddish, edge paler, denticulate; sp. minutely warted, subg. 6-7. Differs from _C. variabilis_ in denticulate edge of gills and sp.