Chapter I: GENUINI. Pileus glabrous, moist or viscid

=sinuatum=, Fr. P. 8-14 cm. compact, exp. and depr. wavy, even, yellowish white; g. very broad, crowded; s. 7-12 cm. solid, fibrillose, white; sp. rough, 8-9. Poisonous.

=lividum=, Bull. P. 7-10 cm. exp. dry, even, longitudinally fibrillose, livid tan; g. broad; s. 5-7 cm. white, glabrous, apex pruinose; sp. subgl. rough, 8-10.

var. _roseus_, Cke. P. whitish ochre, disc rosy.

=prunuloides=, Fr. P. 5-7 cm. campan. then exp. and umb. glabrous, rather viscid, yellowish or livid then pale; g. emarginato-free, ventricose; s. 6-8 cm. solid, unequal, white; sp. subgl. rough, 8-10.

=porphyrophaeum=, Fr. P. 4-6 cm. campan. then exp. umb. and wavy, smoky fuscous then pale; g. truncate behind, almost free; s. 5-7 cm. solid, narrowed from the thickened base, fibrous, naked, smoky purple; sp. rough, 8-10.

Differs from _E. jubatum_ in glabrous p. and hollow s.

=repandum=, Bull. P. 3-5 cm. conical then exp. umb. pale ochre striate or spotted with darker colour, edge incurved, lobed; g. broadest in front; s. 3-5 cm. solid, silky, white; sp. globose, rough, 8. (11 x 6 Sacc.)

=erophilum=, Fr. P. exp. obtuse, dry, pale grey, virgate or venosely striate; g. rounded-adnate, broad; s. solid, short, pruinose; sp. 8 x 6.

Often growing in large circles.

[=holophaeum=, Bres. and Schulz. (_Ag. plebejoides_, Schulz.) Entirely umber outside and inside, pileus and base of stem darkest; g. at length greyish; sp. r. 8-10.

[=pyreniacum=, Q. P. umb. silky-virgate, silvery grey; g. greyish; s. white, fibrillosely striate; sp. rough, 12 long.

=placenta=, Fr. P. 3-5 cm. exp. umb. plane, even, regular, livid purplish; g. crowded, thickish; s. 4-7 cm. solid, fibrously striate, brown; sp. glob. 8.

=helodes=, Fr. P. 5-7 cm. exp. plane, subumb. livid purplish or smoky, often spotted; g. attenuato-adnate, white then rosy; s. 5-7 cm. hollow, pallid, fibrillose, base somewhat thickened; sp. globose, rough, 10.

[=quisquilaris=, Karst. P. convex exp. subumb. slightly pruinose, reddish or reddish-bay, disc darker, edge incurved, even; g. crowded; s. subequal, reddish then blackish-bay; sp. 7-10 x 4-5.

[=fuliginarium=, Karst. P. convex then subdepr. glabrous, edge incurved at first, pellucidly striate, pitch-black then livid; g. adnate, crowded, oblong, pallid; s. paler than p., apex white pruinose; sp. ----.

=bulbigenum=, B. and Br. (= _E. Persoonianum_, Phil. and Plow.) P. 2-3 cm. campan. or hemispher. obtuse, slightly tomentosely scaly, white; g. adnexed; s. 5-7 cm. fibrillose, whitish, hollow, base somewhat bulbous; sp. rough, 13-15.

=Batschianum=, Fr. P. 2-3 cm. umb.-convex then plane and depr. even, viscid, blackish; g. grey; s. 5-7 cm. tough, adpressedly fibrillose, grey, base narrowed; sp. subgl. rough, 7-9.

[=cudon=, Fr. P. tough and cartilaginous, conical, acute, blackish umber, edge incurved; g. crowded, smoky purple; s. short; glabrous, pallid.

=Bloxami=, Berk. P. 2-3 cm. campan. obtuse, dingy blue, purple, or slate-colour, edge inclined to be lobed; g. pale rose; s. 3-4 cm. solid, colour of p.; sp. globose, rough, 9-10.

=ardosiacum=, Bull. P. 3-5 cm. campan.-convex, obtuse, deep blue with brown tinge, then greyish; g. free; s. 5-7 cm. hollow, blue, base white; sp. subgl. rough, 9-10.

[=nitidum=, Q. (= _E. ardosiacum_, Fr. Ic. t. 94, f. 4, not of Bull.) P. campan. silky-shining, dusky bluish-violet, edge lilac, flesh white; g. free, broad, white then flesh-colour; s. slender, often twisted, shining, colour of p.; sp. rough, 8.

=madidum=, Fr. Smell strong. P. 3-5 cm. campan. exp. obtuse, viscid, blackish-violet, sooty when old; g. greyish white; s. 5-8 cm. hollow, violet, thickened base white; sp. rough, 8.

=liquescens=, Cke. P. 3-5 cm. exp. broadly umb. ochre, disc darker; g. free, white then dingy lilac; s. 5-8 cm. white, hollow; sp. subgl. rough, 7-8.

Gills deliquesce when mature.

[=excentricum=, Bres. P. campan. exp. mammilate, glabrous, tinged tan; g. emarginate; s. cylindrical, colour of p. apex scurfy, always excentric; sp. rough, 10-18.

[=viridans=, Fr. P. conical then exp. viscid, umb. olive-green; g. nearly free, crowded; s. hollow, glabrous.

[=rubellum=, Scop. P. exp. obtuse, even, viscid, reddish; g. crenulate, rosy; s. hollow, slightly downy, white; sp. 11 x 6.

=ameides=, B. and Br. P. 3-5 cm. campan. often irreg. flocculent, soon glabrous and silky, pale reddish-grey; g. deeply rounded behind, rugulose; s. 3 cm. whitish; sp. subgl. rough, 10.