Fr. P. excentric or dimidiate, deformed, somewhat lobed,
glabrous pale rufous; g. decur. crowded, narrow, whitish red; s. solid,
glabrous, ascending, black.

[=spodoleucus=, Fr. P. plane, orbicular, even, glabrous, greyish; g.
crowded, white, separate behind; s. solid, glabrous, paler than p.; sp.
5-6 x 2-3.

=pantoleucus=, Fr. White. P. 4-7 cm. even, glabrous, spathulate, depr.
behind, marginate; g. crowded, distinct at base; s. 1-2 cm. ascending,
glabrous, not rooting; sp. 11-12 x 4.

Differs from _P. spodoleucus_ in pileus being white and depressed
behind.

[=pometi=, Fr. White. P. fleshy, rather flaccid, convex, even, disc
depr.; g. decur. crowded, not joined behind; s. elastic with a downy
rooting base; sp. 6-9 x 3-4.

[=Battarrae=, Q. White. P. cyathiform, spotted with blackish brown
squamules; g. milk-white; s. slender, attenuated; sp. 12 long.

[=lignicola=, Sacc. White. P. tough, irreg. exp. subumbil. floccosely
pruinose; g. adnato-decur. crowded, shining white; s. long, incurved,
flocculose at first; sp. 14 x 4.

=mutilus=, Fr. White. P. 2-2.5 cm. fleshy, irreg. silky when dry; g.
narrow, simple; s. 1-2 cm. long, terete, base downy; sp. ----.

Resembles _Omph. scyphoides_. Differs in nearly glabrous, irreg. p. not
becoming infundib.

[=macropus=, Bagl. Large, caespitose. P. excentric, exp. glabrous,
sooty-grey; g. decur. white; s. joined at base, firm, long, thickly
tomentose.

[=luteo-caesius=, Bagl. P. subexcentric, exp. fibrillosely rivulose,
tawny brown, edge wavy, incurved; g. subdecur. narrow, greyish yellow;
s. solid, fibrillose, long rooting.

[=lutincola=, Lasch. Caespitose, fuscous; p. glabrous; g. adnate with a
tooth running down stem to torn ring; s. often excentric.

[=pulvinatus=, Pers. P. pulvinate, rather wavy, glabrous, whitish, disc
tinged flesh-colour; g. decur. crowded, white; s. very short, solid,
hard.

**** _Veil absent; gills deeply decur.; pileus lateral, sessile or
produced behind into a short stem-like base._

=ostreatus=, Jacq. Tufted. P. 7-15 cm. fleshy, shell-shaped, ascending,
blackish then grey or pallid; g. rather distant, anastomosing behind,
pallid; s. widening into p. very short, downy or strigose at base; sp.
10-12 x 4-5. Esculent.

var. _euosmus_, B. Smell strong. Gills and spores tinged pink.

var. _columbinus_, Q. P. dark bluish-grey.

var. _nudipes_, Boud. S. quite glabrous.

[=ambiguus=, Oud. Excentric. P. sessile or shortly stalked,