long.

## _Pileus coloured._

[=coopertus=, Fr. P. conico-campan. 2.5 cm. striate, lurid, densely
micaceous, yellowish grey when dry; g. adnate, broad; s. 3-5 cm. pallid,
apex with white flecks; sp. ----.

[=pseudo-plicatilis=, Vogl. P. campan. umb. soon exp. and sulcate,
yellowish grey, umbo yellowish, scurfy; g. adnate; s. white, woolly,
thickened and floccose below; sp. 6-8 x 3.

=velox=, Godey. P. obovate, striate then grooved, scurfy between the
ribs, disc also greyish and scurfy, 3-4 mm.; g. close to stem; s. 1.5-3
cm. with white floccose down; sp. ----.

=ephemerus=, Fr. P. very delicate, ovate then campan. sulcate, slightly
scurfy, disc elevated, even, rufescent, 1-2 cm.; g. slightly adnexed; s.
3-6 cm. glabrous, whitish, pellucid; sp. 16-17 x 9-10.

[=mycenopsis=, Karst. P. campan. then exp. sulcate, sooty-grey, livid
disc prominent, scurfy, soon naked; g. adnate; s. tall, glabrous, white,
striate upwards; sp. 7-8 x 4.

++ _Gills free._

# _Stem fibrillose or downy._

=cothurnatus=, Godey. P. conico-campan. then exp. and umb. densely
scurfy, whitish, yellowish or reddish, 2-3 cm.; g. free; s. 3-5 cm.
white, squamulose below; sp. ----.

[=evanidus=, Godey. P. obovate then campan. striate, whitish, rather
scurfy, disc prominent, tinged brown; 3-4 mm.; g. free, distant; s.
1.5-2.5, pellucid, white, downy; sp. ----.

## _Stem glabrous._

=sociatus=, Fr. P. ovate then campan. plicate, subsquamulose or scurfy,
disc umber and becoming depr. 2 cm.; g. narrowed behind, attached to a
collar; s. 4-5 cm. white, glabrous, not pellucid; sp. ----.

Gills much nearer s. than in _C. plicatilis_, much narrowed behind,
black.

[=sulcato-crenatus=, Steinh. P. cylindrical then campan. soon plane,
sulcato-crenate, almost glabrous, yellow, disc brown, even, becoming
depr.; g. remote from stem, distant; s. yellow, apex brown; sp. obtusely
triangular, compressed.

Differs from _C. plicatilis_ in yellow p. and s.

[=Patouillardii=, Q. P. conico-campan. then plane, coarsely striate up
to disc, grey, disc rough with minute reddish granules; g. attached to
collar distant from s.; s. 4-7 cm. white, glabrous, fragile; sp.
angularly globose, 6-8.

Differs from _C. nycthemerus_ in white s.; and from _C. velaris_ in
rough disc.

=papillatus=, Fr. P. elliptical then campan. becoming plane and
upturned; disc prominent and rough with minute warts, dark, striate,
covered with greyish scurf, .5-1 cm.; g.