,
brown, edge white; s. slender, glabrous, white.

var. _astrospora_, Q. Subhygr. very fragile, blackish grey then
fuscescent, glabrous; g. adnato-decur. dusky brown-purple then blackish;
s. straight, rigid, hollow, white, striate and white-mealy above; sp.
black, 11-14 x 5.

=tenuicula=, Karst. P. very thin, campan. subexp. everywhere striate,
whitish, then livid or smoky, pale when dry; g. adnate, pallid then
grey; s. usually wavy, hyaline, pellucid, glabrous; sp. 5-6 x 3.

[=subliquescens=, Schum. P. conico-exp. brown-striate, viscid; g. nearly
free, subliquescent; s. elongated, attenuated, straight, pale brown.

[=typhae=, Kalchb. Small. P. thin, convex, striate, glabrous, pallid
ochre then pale umber; g. nearly free, whitish then fuscous; s. naked,
whitish, seated on an orbicular membranaceous arachnoid mycelium.

var. _iridis_, Boud. P. fuscous, striate, umbo rugulose, semipellucid;
s. with a median ring; sp. 10-13 x 6-7.

[=stricta=, Trog. P. campan. silky-even, dry, pallid; g. adnexed,
subdeliquescent, purplish umber; s. tall, straight, glabrous, white.

=gyroflexa=, Fr. P. 1-2 cm. conico-campan. striate, atomate, grey, disc
rufescent when dry; g. adnexed; s. 3-5 cm. flexuous, silky, white; sp.
8-10 x 4-5.

II. OBTUSATI. _Pileus campanulato-convex, expanding, glabrous or
atomate, gills plano- or arcuato-adfixed._

=spadiceo-grisea=, Schaeff. P. 3-4 cm. conico-campan. then exp. subumb.
glabrous, striate to middle, hygr. bay then greyish; g. narrow; sp. 8-10
long.

=obtusata=, Fr. P. 1-2 cm. campan. then exp. obtuse, glabrous,
corrugated, hygr. rather shining, umber then pale; g. adnate; s. 2-4 cm.
pallid, base incurved; sp. 6-7 x 4.

[=ombrophila=, Karst. P. plane, orbicular, subgibbous, even, granular;
g. adnexed, blackish; s. reddish, base subtuberous; sp. yellowish, 4-6 x
2-3.

=neglecta=, Mass. P. 6-8 mm. convex then exp. even, glabrous, pale
ochre, atomate and whitish when dry; g. purple-brown; s. 2-3 cm. rather
wavy, white, pellucid; sp. 12 x 6; cystidia abundant, fusiform.

Differs from _P. urticaecola_ in glabrous p.

[=fagicola=, Lasch. P. thin, campan. obtuse, striate, viscid,
greenish-blue, sublivid, fuscescent; g. adnexed then separating,
subliquescent, brown.

[=Falkii=, Weinm. P. thin, hemispher.-exp. pellucid, moist, hygr. mealy
grey when dry; g. laxly adfixed, ventricose, umber then fuscous-purple.

[=solitaria=, K. Fragile. P. campan.-exp. glabrous, umber, pallid tan