Chapter 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 when dry; s. fistulose, equal, whitish, fibrillose, base with white down; sp. 6-7 x 3, cystidia ventricose-fusoid.

[=pallens=, Karst. P. convex, even, often rugulose when dry, atomate, naked, whitish when dry; g. subadnate, ascending, grey, edge rosy; s. equal, straight, naked, pallid; sp. 18-25 x 12-13; cystidia fusoid.