blackish squamules; g. grey; s. glabrous, greyish.

[=epichysia=, Pers. Soft. P. thin, exp. umbil. sooty grey, pallid when
dry, silky or floccosely scaly; g. plano-decur. whitish then grey; s.
grey; sp. 8-10 x 4-5.

=philonitis=, Lasch. P. 1-2 cm. deeply umbil. edge erect, hygr. floccose
when dry, grey; g. deeply decur. greyish; s. 3-5 cm. glabrous, grey; sp.
5-7 x 3.5.

Differs from _O. oniscus_ and _O. epichysium_ in erect margin of p.

[=campestris=, Rom. P. campan. umbil. then exp. sooty-fuscous, sulcate
when dry; g. greyish-white, decur.; s. equal, glabrous, colour of p.
Appearing late in the season; glabrous; sp. 9-13 x 6-8.

=oniscus=, Fr. P. 1.5-2.5 cm. thin, infundib. wavy, flaccid, glabrous,
even, grey; g. grey; s. 2-3 cm. wavy, grey; sp. 6 x 5.

[=oniscoides=, Karst. P. convex-umbil. sometimes reflexed and concave,
glabrous, everywhere pellucidly striate, sooty or livid fuscous, pallid
grey when dry; g. adnate, then subdecur. white or greyish, edge
denticulate, s. tinged fuscous, base darkest; sp. 5-6 x 4.

=caespitosa=, Bolt. P. 1-2 cm. thin, hemisph. umbil. sulcate, whitish
ochre; g. whitish; s. 1-2 cm. coloured like p., base thickened; sp. 6 x
5.

[=arenicola=, Fr. P. thin, cup-shaped, wavy, with wart-like spots,
umber; g. paler than p.; s. short, umber.

=glaucophylla=, Fr. P. 1-1.5 cm. infundib. plicato-striate, hygr.
mouse-colour then paler; g. olive; s. stuffed, firm; sp. ----.

=rustica=, Fr. P. 5-8 mm. thin, slightly convex, umbil. striate, hygr.
greyish brown then paler and silky; g. grey, edge arcuate; s. 2-2.5 cm.,
colour of p.; sp. ----.

Differs from _O. umbellifera_ by gills being narrowed behind.

[=scyphiformis=, Fr. White. P. infundib. glabrous; g. decur. thin; s.
thin, short, glabrous.

Differs from _O. scyphoides_ in glabrous stem.

*** _Gills truly distant, broad, usually thick._

[=tricolor=, A. and S. P. ochraceous white, thin, umbil.; g. orange, at
first with rosy pruinose; s. yellowish.

[=cortiseda=, Karst. P. convex then plane, radiato-striate, glabrous,
pallid; g. adnato-decur. very distant, thickish, few, pallid; s. equal,
hyaline, pallid; sp. 10-11 x 4-6.

[=sciopoda=, Q. P. convex then umbil. rather crisped, pale straw-colour,
pruinose; g. adnate, thick, sometimes branched, straw-colour then tinged
rose; s. slender, wavy, velvety-pruinose, white above, grey below.

=demissa=, Fr. P. 1-1.5 cm. thin, plane then umbil. striate, shining
rufous then pale; g