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 × 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 × 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 × 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 × 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.