Chapter I: ORCELLI. Gills deeply decur. Pileus irreg. subexcentric, wavy,

scarcely hygr. edge at first flocculose._

=prunulus=, Scop. Smell like new meal. P. 5-9 cm. compact, convex and regular then wavy, dry, pruinose, greyish white; g. rather distant; s. 2-3 cm. ventricose, naked, striate, white; sp. 7-8 x 5. Edible.

=orcella=, Bull. Smell like new meal. P. 5-7 cm. soft, plano-depr. irreg. from first, silky, rather viscid when moist, yellowish-white; g. crowded; s. 2 cm. flocculose, thickened upwards; sp. 7 x 4.

=mundulus=, Lasch. P. 3-5 cm. plano-depr. unequal, dry, white; g. closely crowded, narrow; s. 2-3 cm. floccosely villose, white, becoming blackish inside; sp. 10 x 5.

[=pseudoorcella=, Fr. P. exp. depr. even, somewhat fuscous, but silkily hoary; g. broad, distant, greyish white; s. solid, short, outside and inside greyish-brown.

=popinalis=, Fr. Entirely grey. P. 3-5 cm. flaccid, rather wavy, glabrous; g. crowded, dark grey; s. 3-4 cm. equal, naked; sp. rough, 4-5.

=undatus=, Fr. P. 2-3 cm. deeply umbil. wavy, fragile, sooty grey, pale and silky opaque; g. dark grey; s. 2-3 cm. hollow, colour of p.; sp. rough, 6-8. (10-12, Quel.)

var. _viarum_, Fr. P. often excentric, greyish hoary, shining, with darker zones.

[=concentricus=, Gill. P. convex, umbil. edge wavy, greyish or reddish with brown broken concentric lines; g. reddish grey; s. pale reddish with abundant white down at base.

=cancrinus=, Fr. P. 2-3 cm. convex-umbil. then exp. unequal, flocculose, smooth, pale reddish-white; g. decur. distant; s. 2 cm. tough, glabrous, white; sp. rough, 5-6.

=cretatus=, B. and Br. P. 1-2 cm. convex then umbil. thin, dead white but shining, edge incurved; g. very decur.; s. 4-6 mm. white; sp. subgl. 4-5. (7 x 3 Phil., 11-12 long, Quel.)

[=lentulus=, Karst. P. plano-depr. often irreg. rather silky, rather viscid when moist, whitish; g. decur. closely crowded, narrow, pallid; s. solid, equal, wavy, flocculose, pallid; sp. rough, 2-4.