_, Fr. Smaller, p. becoming almost plane; s. thin, base
bubillose, downy.

forma _pulchella_, Fr. Milk-white; g. linear, ascending; s. attenuated.
Solitary.

[=olida=, Bres. Smell very strong, rancid. P. thin, conico-campan.
obtuse, then exp. and umb. yellow soon pale straw; g. uncinato-decur.
connected by veins, white; s. hyaline, strigosely rooting; sp. 8-9 x 6.

=gypsea=, Fr. Caespitose. Pure white, rarely with a yellow tinge. P. 1-2
cm. conical then campan. striate up to umbo, glabrous; g. subuncinate;
s. 5-7 cm. straight, narrowed upwards from hairy base; sp. 8-9 x 4.

[=nivea=, Q. Shining white. P. sulcate, diaphanous; g. uncinate; s.
pruinose, base rather swollen, fibrillose.

[=galeropsis=, Fr. P. conico-camp. even, gilvous; g. free, whitish; s.
straight, narrowed upwards, fragile, not rooting, ferruginous below.

[=nucida=, Brig. P. campan. obtuse, even, downy under a lens, deep
rust-colour, hygr.; g. free, white then rosy; s. silky shining, base
snow-white, apex mealy.

[=Benzonii=, Fr. P. very thin, campan. exp. umbil. finely striate,
pallid or reddish; g. white; s. equal, glabrous, white.

An introduced species.

[=melanops=, West. P. convexo-camp. plicate, umbo blackish-brown; g.
adnexed to a collar; s. slender, glabrous base fibrillose.

[=pruinatus=, Fr. Shining white. P. thin, conico-campan. papillate, edge
deflexed, sulcate, pruinose; g. crowded; s. bulbous, naked.

III. RIGIDIPEDES. _Stem firm, rigid, rather tough, juiceless, base
strigosely rooting, gills discoloured, grey, reddish, &c., often
connected by veins._

=cohaerens=, Fr. P. 2-3 cm. camp. obtuse, tawny cinnamon, soft and
velvety; g. free, distant, very broad, pallid; s. 8-12 cm. horny, rigid,
even, shining, bay, base downy, rooting; sp. 10 x 7-8.

[=raeborhiza=, Lasch. P. acute camp. exp. glabrous, striate, rather
tawny then pale; g. almost free, connected by veins; s. even, floccosely
pruinose, rooting, tinged tawny.

=prolifera=, Sow. Caespitose. P. 1-2 cm. camp. then exp. subumb., margin
coarsely striate, yellowish tan; g. adnexed; s. 6-8 cm. glabrous,
shining, striate, brownish below, rooting; sp. ----.

=excisa=, Lasch. (non Berk.). P. 2-3 cm. camp. then obtuse, greyish
fuscous or pallid; g. scarcely adnexed, narrowed behind, very broad in
front, pallid; s. 2-3 cm. tough, even, grey, rooting; sp. ----.

Differs from _M. polygramma_ in smooth stem.

var. _fagetorum_, Fr. Slender. P. even, striate to mid