=Stropharia=. Gills adnate dark brown or purplish.
=Anellaria=. Gills adnexed, grey and clouded with the black spores.
++ Ring very imperfect or absent; gills decurrent.
=Gomphidius=. Gills subgelatinous.
+++ Gills not decurrent, not adhering laterally when young, not deliquescent.
=Hypholoma=. Gills sinuate, dark brown or blackish-purple; veil often hanging in fragments from edge of pileus.
=Panaeolus=. Edge of pileus extending beyond the gills, pileus not striate.
=Psathyrella=. Pileus sulcate or striate.
=Psathyra=. Stem fragile; edge of pileus straight when young.
=Psilocybe=. Stem tough; edge of pileus incurved when young.
++++ Gills adhering laterally when young, deliquescing at maturity.
=Coprinus=. Ring and volva present in some species, ring alone others, both absent in others; gills adnate, adnexed or free.
+++++ Flesh of pileus entirely absent, the gills radiating from the stem free and unconnected by flesh above.
=Montagnites=. Volva present, buried in the ground.
CHITONIA, Fr.
=rubriceps=, Cke. and Mass. P. 2-3 cm. campan. then exp. umb. reddish-brown; g. free, purplish-brown; s. 6-7 cm. hollow, paler than p., volva large, free edge torn; sp. 12 x 6.
Introduced along with living plants into Kew Gardens.
Unless the small volva is noticed, this fungus will be considered as a sp. of Coprinus.
AGARICUS, L.
A. EDULES. Large, fleshy.
=augustus=, Fr. P. 8-14 cm. globose then exp. very obtuse, disc even, rest fibrillosely-scaly, pale yellow-brown; g. crowded, narrow, fuscous, remote from stem; s. 8-14 cm. solid, ring superior, large, areolately squamulose below; sp. 6 x 3.5. Edible.
=peronatus=, Mass. P. hemispher. then exp. dull ochre, densely scaly; g. distant from stem, crowded, purple-brown; s. 10-14 cm. equal, marginately bulbous, hollow, with large spreading white scales up to broad spreading ring; sp. 6 x 4. Edible.
Differs from A. augustus in hollow, peronate stem.
=elvensis=, B. and Br. P. 9-15 cm. subglobose then exp. fibrillose, broken up into large persistent brown scales, edge warted; g. crowded; s. 8-12 cm. narrowed at base, fibrillose, ring large, thick, warted below; sp. 8 x 4. Edible.
=arvensis=, Schaeff. P. 10-24 cm. conico-campan. then exp. smooth, even, white often stained yellow, flesh white, unchangeable; g. close to stem, narrow; s. 6-12 cm. hollow, whitish, floccosely stuffed, ring pendulous, double, exterior radiately split; sp. 6 x 4. (9-11 x 6 Sacc.) Edible.
var. purpurascens, Cke. Smaller than type. P. tinged purple.
Differs from Ag. xanthodermus in the persistently white flesh.
=xanthodermus=, Genev. (= Ag. flavescens, Roze.) P. 6-10 cm. fleshy, convex, even, glabrous, greyish-white, cuticle becoming yellowish when touched, and the white flesh changing to yellow when broken; g. free, sinuate, pale rose then grey, finally purple-brown; s. cylindrical, stuffed, ring thin, flesh deep yellow at base, rest white; sp. ----.
European Fungus Flora: Agaricaceae · The Wunder Library — complete classics, free to read, with narration.