p into patches, soon naked and white; g. adnexed; s. glabrous, white,
hollow; sp. 9-15 x 4-9.

Differs from _C. albus_ by glabrous s.

++ _Gills free._

=picaceus=, Fr. P. campan. glutinous, striate up to disc, blackish with
white patches; g. free; s. 10-15 cm. white, hollow, base swollen; sp. 14
x 8.

=tomentosus=, Fr. P. cylindr. then narrowly conical, at length exp. 2-3
cm.; pallid yellow, covered with a greyish felt which breaks into
scales; g. free; s. 5 cm. hollow, greyish, velvety; sp. ----.

[=velatus=, Q. P. cylind. then exp. 2-3 cm. yellowish, sulcate, veil
white, thin; g. free but close to s.; s. 4-6 cm. white, villose,
coarsely striate; sp. 10 x 5.

[=Forquignoni=, Mass. (_C. Queletii_, Forq.). P. conico-campan. veil
thick, ochraceous, then broken up into persistent patches, whitish, 5-6
cm. high; g. remote; s. white, floccosely fibrillose, ending in a tawny
bulb; sp. 9 x 6.

[=varicus=, Fr. P. white or livid towards the split edge, with patches
of white veil; g. free; s. 6-9 cm. often incurved, white, glabrous,
solid, tough.

Differs from _C. picaceus_ in white p. and solid s.

** _Veil breaking up into superficial scales, cottony or
fibrillose._

+ _Gills attached to stem._

# _Pileus white or grey._

=niveus=, Fr. All pure white. P. 1-2.5 cm. campan. floccose; g. slightly
adnexed; s. 5-8 cm. hollow, villose; sp. 16 x 11-13.

var. _astroideus_, Fr. P. squamose, naked, grey, 1 cm.; s. up to 8 cm.
slender, glabrous.

[=albus=, Q. Snow white. P. ovoid then exp. 1.5-2 cm. floccosely mealy
then pearl grey and grooved, with tawny flecks at disc; g. adnate,
seceding; s. coarsely striate upwards; sp. 12-13 long.

[=Rostrupianus=, Hansen. White. P. thin campan. then exp. tomentose,
squamulose; g. free, grey then blackish; s. narrowed upwards, glabrous
above, downy below, base with white tomentum.

Medium sized, allied to _C. niveus_.

[=pilosus=, Beck. P. cylindr. apex rounded, white, densely covered with
septate acute white hairs, then exp. and centre almost glabrous and
yellowish, edge slightly striate; s. slender, pubescent, base floccose;
sp. 9-12 x 6-7.

=exstinctorius=, Fr. P. 3-5 cm. across, campan. whitish, apex tinged
brown, at first with evanescent floccose scales; g. reaching stem; s.
8-12 cm. smooth, white, hollow, swollen at base and rooting; sp. 10-11 x
6-7.

Differs from _C. fimetarius_ in pileus becoming bald from disc to
margin.

[=roris=, Q. P.