[=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 3.

=velox=, G.o.dey. 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 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 4.

++ _Gills free._

-- _Stem fibrillose or downy._

=cothurnatus=, G.o.dey. 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=, G.o.dey. 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, coa.r.s.ely 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. free; s. 2.5 cm. white, hyaline, hollow; sp. 15 7.

[=affinis=, Karst. P. conico-cylindr. then exp. greyish white, disc pale rufous, plicate, scurfy; g. free; s. flaccid, glabrous, pallid; sp. 6-8 5-7.

=radiatus=, Fr. P. cylindrical, soon plane and splitting, yellowish, disc darker, then whitish, minutely pilose when young; g. almost free; s. 1-3 cm. hyaline, pilose; sp. 7-8 5.

=Gibbsii=, Ma.s.s. and Crossl. Very minute, p. 0.5 mm. hemispher. then exp. striate, glabrous, pale ochre; g. adnate, few; s. 4-7 mm. white, glabrous; sp. subcircular, compressed, 8-9 diam.; cystidia piriform.

[=lanatus=, Boud. P. soon campan. plicately striate, greyish rufous disc darker; g. free; s. glabrous, white, slightly bulbous.

** _Pileus glabrous._

+ _Gills attached to stem._

-- _Stem downy or pulverulent._

=tardus=, Karst. P. ovoid then campan. 2.5-5 cm. coa.r.s.ely striate, bay then ochre, glabrous; g. adnate; s. 6-10 cm. white, slightly flexuous, equal; sp. angularly ellipt. 12-18 7-9.

Differs from _C. deliquescens_ in smooth disc and adnate g.

[=Gilletii=, Jacobasch. (= _Cop. intermedius_ Gill.). P. ovato-campan.

grey, disc yellow; pulverulent then glabrous, edge striate; g.

ovato-elongate, blackish; s. slender, glabrous, hollow, with a membranaceous, distant, fixed erect ring.

[=attenuatus=, Gill. P. conico-campan. even, glabrous, edge sulcate, upturned when dry, apex yellowish; g. broad, ventricose, reddish-brown; s. long, slender, hollow, narrowed towards base.

---- _Stem glabrous._

[=auricomus=, Pat. P. elliptic-oblong then campan. finely striate, pale greyish red disc darker, glabrous, 1.5-2 cm.; g. adnate; s. 5-8 cm.

white, glabrous; sp. ----.

Young plant enveloped in a golden yellow weft (= Ozonium).

=congregatus=, Fr. P. cylindrical then campan. edge slightly striate, glabrous, viscid, ochre, 1.5-2 cm.; g. slightly adnexed; s. 2-3 cm.

smooth, hollow, white; sp. ----.

=alternatus=, Fr. P. hemisph. then discoid, even, glabrous, chalk-white disc pale umber, 3 cm.; g. adnate; s. whitish, hollow, 7-10 cm.; sp. 10 6-7.

=digitalis=, Fr. P. ovate then campan. whitish disc darker, glabrous, striate up to disc, 2.5 cm.; g. slightly adnexed; s. 3-5 cm. whitish, equal; sp. ----.

When mature the p. is sometimes livid olive or yellowish grey, and g.

appear to be adnate.

[=diapha.n.u.s=, Q. Every part translucent and glabrous. P. grooved, edge crenulate, silvery with a central tawny spot, 5-7 mm.; g. adnate; s.

capillary, glabrous, 2-3 cm.; sp. 12 long.

Differs from _C. plicatilis_ in adnate g.

[=sceptrum=, Fr. P. campan. papillately umb. deeply sulcate, pellucid, tinged grey; g. adnate to a collar; s. pellucid.

=erythrocephalus=, Fr. P. cylindrical then campan. reddish vermilion becoming grey, silky, edge very finely striate, 1 cm.; g. slightly adnexed; s. 2-3 cm. paler than p.

++ _Gills free, sometimes attached to a collar._

-- _Stem downy or pulverulent._

[=G.o.deyi=, Gillet. P. subglobose, distantly grooved, glabrous, pellucid, disc ochre, grey between the ribs, 3-4 mm.; g. free; s. 2 cm. pellucid, sprinkled with white flecks below.

[=semistriatus=, Pat. P. ovate then campan. glabrous, disc even, yellowish, striate and grey up to disc, 1 cm.; g. attached to a collar; s. 1-2 cm. white, pruinose; sp. subcircular, compressed, 12-14 broad, 3 thick.

---- _Stem glabrous._

=plicatilis=, Fr. P. thin, cylindric ovate then plane, glabrous, coa.r.s.ely grooved, pale brown then greyish, disc broad, even, at length depr. darker, 1-2 cm.; g. attached to a distant collar; s. 5-8 cm.

white, smooth, hollow; sp. 11-13 8-9.