[=violaceo-atrum=, Letell. Caespitose. P. conical then exp. umb. dusky violet; g. brownish violet; s. fistulose, even, whitish.

=appendiculatum=, Bull. P. 4-7 cm. ovate then exp. bay then whitish, rugulose, and atomate; g. white then fleshy brown; s. 5-7 cm. glabrous, white; sp. 5 2.5. (6-8 3-4 Sacc.)

Differs from _H. Candolleanum_ by absence of violet in gills when young.

=hydrophilum=, Bull. (_Bolbitius_, Fr.). Tufted. P. 3-5 cm. convex then exp. often rather wavy and rugulose, glabrous, bay then ochre; g.

adnexed, crowded, with beads of moisture, fuscous-cinnamon; s. 4-5 cm.

pallid; sp. 5 3, rusty cinnamon.

Differs from _Psil. spadicea_ in the rusty cinnamon gills and spores.

[=sublentum=, Karst. P. tough, campan.-convex, exp. obtuse, wavy, rugulose towards the edge which is silky from veil, glabrous, hygr.

smoky rufous or brown then pale; g. adnate, purplish brown, edge white, flocculosely crenate; s. fibrous, hollow, white, veil append.; sp. 8-10 4-5.

[=subpapillatum=, Karst. Caespitose. P. exp. wavy, glabrous, rough with minute crowded warts, bay or rufous-cinnamon then pale ochre and wrinkled; g. dry; s. equal, silky-shining, apex striate and pruinose, becoming pale; sp. 5 2.5-3.

Differs from _Hypholoma appendiculatum_ in granulose p.

=catarium=, Fr. P. 1.5-2 cm. hemispher. exp. ochraceous then pale; g.

adnate, white then fuscous; s. 3-4 cm. white, rather shining, base thickened and white-floccose; sp. 6 3.

=leucotephrum=, B. and Br. Tufted. P. 5-7 cm. campan. exp. whitish, rugose, append.; g. grey then blackish; s. 6-9 cm. apex coa.r.s.ely striate, ring ample; sp. 10 6.

[=felinum=, Pa.s.s. P. hemispher. exp. glabrous, hygr.; g. adnate, white, then fuscous; s. fistulose, short, slender, somewhat shining, base thickened and white floccose, apex striate.

=egenulum=, B. and Br. Solitary. P. 2-3 cm. exp. umb. watery white, smooth, edge appendiculate; g. purplish umber, edge white; s. 4-5 cm.

fistulose; sp. ----.

=pilulaeforme=, Bull. P. 1.5-2 cm. globose then exp. even, fuscous then ochre; g. white then brownish; s. 2-3 cm. white, at first with a ring; sp. ----.

PANAEOLUS, Fr.

* _Pileus viscid, shining when dry._

=leucophanes=, B. and Br. P. 2 cm. campan. obtuse, whitish, satiny, edge with fragments of veil; g. adnate, edge white; s. 4-5 cm. white, slightly wavy; sp. 11-13 7-8.

=egregius=, Ma.s.s. P. 4-5 cm. ovate-campan. even, orange-brown; g.

adnexed, broad, edge paler; s. 9-12 cm. pale brown; sp. 15-17 7-8.

=phalenarum=, Fr. P. 2-5 cm. campan.-convex, obtuse, greyish then yellowish, veil append.; g. broad, greyish then black; s. 6-10 cm.

equal, pruinose, pale rufescent; sp. 10 6.

Differs from _P. papilionaceus_ in viscid p.

** _Pileus not viscid, moist, subflocculose when dry._

=retirugis=, Fr. P. 2-3 cm. globose then hemisph. sub.u.mb. pinkish tan, atomate, opaque, with anastomosing raised ribs; g. greyish black; s. 5-9 cm. equal, pruinose, purplish; sp. 11-13 7. (15-20 8-9 Sacc.)

Margin often appendiculate.

[=remotus=, Schaeff. P. campan.-convex, sub.u.mb. flocculosely-rugulose when dry, smoky-tawny; g. free, at length remote, ventricose, black; s.

fistulose, slender, fuscescent; sp. 11-12 8-9.

=sphinctrinus=, Fr. P. 1.5-2 cm. parabolic, obtuse, even, moist, grey or smoky-black, livid and rather silky when dry, veil append.; g. adnate, grey or olive then blackish with a very narrow white edge; s. 4-7 cm.

sooty grey, apex even; sp. 15-17 9-10.

*** _Pileus not viscid, smooth, rather polished, zoneless._

=campanulatus=, L. P. 2-3 cm. campan. slightly viscid, sooty grey, paler and the cuticle often cracking or peeling when dry; g. adfixed, crowded, grey spotted with black, often with beads of moisture; s. fistulose, rufescent or reddish-grey, everywhere pruinose, summit striate; sp. 8-9 6. (15-18 9-13, Sacc.)

=papilionaceus=, Fr. P. 2-3 cm. hemispher. pruinose, greyish, cracked into squamules when dry; g. broadly adnate, very broad, grey spotted with black; s. 6-9 cm. whitish, apex with white meal; sp. 11-12 7. (18 long, Quelet.)

[=subfirmus=, Karst. P. convex then plane, centre subdepr. but also sub.u.mb. even, glabrous, shining, disc subrugulose, dry, pale, smoky line often present near edge; g. adnexed with decur. tooth, lanceolate, black; s. wavy, glabrous, pale, apex flocculosely scaly; sp. 12-14 7-9.

=caliginosus=, Jungh. P. 2 cm. campan. obtuse, even, brown; g. adnexed, lanceolate; s. 4-7 cm. equal, even, naked, colour of p.; sp. 10 6-7.

(16-18 10 Sacc.)

[=Queletii=, Schulz. Solitary, hygr. P. conical, even, pale umber disc fuscescent; g. free, ventricose, blackish, edge white; s. straight, thinner upwards, tinged reddish; sp. 13-14 long.

**** _Pileus dry, with a dark marginal zone._

=subbalteatus=, B. and Br. Caespitose. P. 3-5 cm. convex, hygr.

fawn-colour, rugose when dry; g. adnate, edge white, serrulate; s. 4-6 cm. red-brown, fibrous, white-fibrillose; sp. 14-15 8-9.

=ac.u.minatus=, Fr. P. conico-campan. 1.5-2.5 cm. thin, glabrous, shining, pinkish-buff, with a dark line near the edge; g. adnexed, very broad, whitish then grey, finally dusky bistre; s. 2-3 cm. slender, fistulose, whitish, shining, base brownish, thickened, white and downy; sp. 18 long.

[=guttulatus=, Bres. P. convexo-exp. often sub.u.mb. edge involute then spreading, black, then disc tawny, at first with grey bloom; g. colour of p. edge white pruinose then fringed with drops; s. equal, fistulose, tinged fuscous then greyish-scurfy; sp. 10 4.

=fimicola=, Fr. P. 2 cm. campan.-convex, obtuse, grey then yellowish; g.

adnate, broad; s. 5-9 cm. pallid, with white meal upwards; sp. 16 8-10.

var. _cinctulus_, Bolton. P. reddish-cinnamon; s. dingy brown.

[=hypomelas=, Batt. P. exp. rufous-tomentose, disc blackish; g. crowded, intensely black; s. stuffed, narrowed downwards, greyish-white.

[=gomphodes=, Batt. P. campan.-convex, gibbous, dusky rufous, pannose when dry; g. free, blackish; s. stout, rigid, ascending, flocculose, rufescent, veil arachnoid.

[=Larchenfeldii=, Schulz. P. subgl. silvery, silky shining, sub.u.mbil.

deeply sulcate, edge grey, wavy; g. irreg. plicate; s. hollow, with brown fibrils.

PSATHYRELLA, Fr.

* _Stem straight, glabrous._

=subatrata=, Fr. P. 2-3 cm. campan. obtuse, rufous-umber, paler when dry, edge striate; g. adnate, crowded; s. 8-10 cm. fistulose, white then pallid; sp. 12-15 6-8.