ritiae=, Pers. P. 3-7 cm. splitting, convexo-plane, subumb.
glabrous, moist, edge at length slightly striate, tawny orange; g.
broad, golden then tawny cinnamon; s. 4-5 cm. hollow, fibrous, striate,
silky and white then tawny-rusty; sp. ----.

=picrea=, Fr. P. 2-3 cm. cracking, convexo-exp. even, glabrous, rufous-
or bay-cinnamon then tawny; g. crowded, narrow, yellow then rusty; s.
4-7 cm. fistulose, thin, somewhat umber, narrowed upwards, pulverulent
at first; sp. 8-10 x 5-6.

=nitens=, Cke. and Mass. Caespitose. P. 3-5 cm. hemispher. obtuse,
shining, persistently purple brown; g. pallid then umber; s. 4-7 cm.
fibrillose, pale pinkish brown, solid; sp. 10 x 5-6.

[=limulata=, Fr. P. convex then irreg. densely papillosely-rivulose with
innate flecks, tawny; g. crowded, yellow then cinnamon; s. thin,
fibrillose, rather downy, fuscescent; sp. 6-7 x 3-4.

V. SERICELLI. _Cortinate, cuticle of pileus rather silky, dry or
viscid at first._

[=Agardhii=, Fr. P. convex then exp. obtuse, dry, fibrillosely silky,
almost even, tawny-rusty; g. adnato-decur. crowded, tan then
brown-rusty, edge paler, crenulate; s. equal, wavy, fibrillosely
cortinate.

=ochrochlora=, Fr. Caespitose. P. 3-5 cm. convexo-exp. obtusely umb.
dry, rather silky, subsquamulose, greenish straw-colour; g. adnate,
crowded, greenish-white then olive; s. 4-5 cm. hollow, scaly and
white-floccose, wavy, base and inside rusty; sp. 8 x 4.

Resembling _Hypholoma fasciculare_, differing in rusty sp.

=helomorpha=, Fr. White. P. 1.5-2.5 cm. exp. gibbous, unequal, viscid,
silky when dry, edge naked; g. adnato-decur. crowded, white then tan; s.
2-3 cm. solid, unequal, curved, even, almost glabrous; sp. 10 x 6.

=scamba=, Fr. P. 2-4 cm. exp. subdepr. floccosely downy, viscid in damp
weather, white then tinged tan; g. subdecur. yellowish tan; s. 3-4 cm.
short, incurved, flocculosely cortinate, white, base narrowed; sp. 10-12
x 5-6.

_Introduced species._

=filicea=, Cke. P. 2-4 cm. convexo-exp. or slightly depr. squamulosely
fibrillose, deep yellow disc tawny, veil reddish, append.; g. adnate,
sulphur then tawny; s. 3-5 cm. hollow, sulphur, base tawny; sp. 8 x 5.

=purpurata=, Cke. and Mass. P. 3-4 cm. exp. obtusely umb. purple or
purple-brown, squamulose, dry; g. adnate, yellow then rusty; s. 3-4 cm.
incurved, purplish and granulose below; sp. 8 x 5.

CORTINARIUS, Fr.

_Key to the Subgenera._

I. =Phlegmacium=. Partial veil cobwebb