Differs from _R. ochracea_ in being very acrid.

=aurata=, Fr. P. 6-10 cm. rigid, exp. polished, citrin or orange, sometimes reddish, edge becoming striate, flesh under cuticle citrin; g.

broad, shining citrin; s. 5-8 cm. white tinged yellow; sp. ----.

[=rhytipes=, Fr. Foetid. P. depr. dry, yellowish, blotched purple or olive, corrugated, flesh sulphur yellow; g. broad, yellow, edge darker; s. conical, reticulately rugose, greyish purple.

No account of mild or acrid taste is given, hence its position is uncertain. Has points in common with _R. aurata_.

=claroflava=, Grove. P. 5-7 cm. bullate then plane, chrome yellow; g.

white, lemon yellow, then tinged ochre; s. 3-6 cm. white then grey or blackish; sp. 8-9.

Differs from _R. ochroleuca_ in bright yellow p.

++ _Pileus red or purple._

=rubra=, Fr. P. 3-9 cm. rigid, convex exp. depr. dusky blood red or with a tinge of purple, polished and even when dry; g. adnate whitish; s. 4-7 cm. hard, white sometimes tinged red; sp. 8-10.

Differs from _R. atropurpurea_ in very acrid taste.

=drimeia=, Cke. (= _R. expallens_, Gil.). P. 5-9 cm. firm, exp. depr.

bright purple to rose colour; g. clear yellow; s. 4-8 cm. purple, paler than p.; sp. 7-9. Intensely acrid.

=veternosa=, Fr. P. 4-5 cm. plano-depr. rosy or flesh colour then pale, slightly viscid; g. adnate, narrow, white then straw colour; s. 5-8 cm.

spongy then hollow, white; sp. 7-9.

=maculata=, Q. P. 5-8 cm. thin, firm, exp. viscid, reddish flesh-colour, then pale and blotched brownish; g. sulphur then peach colour; s. 3-4 cm. white or tinged rose, then spotted ochre; sp. 9-10.

Differs from _R. depallens_ in being smaller, acrid, and stem not grey.

=serotina=, Q. P. 2-2.5 cm. globose then more or less exp. purple brown or olive, edge lilac, with white bloom at first; g. almost free, white then tinged yellow; s. 2-3 cm. white; sp. 8-9.

** _Gills white._

+ _Pileus ochraceous or umber._

=ochroleuca=, Fr. P. 7-9 cm. exp. depr. viscid at first, ochraceous then pale, disc cracked into granules, margin almost even; g. rounded behind, broad, subequal, whitish; s. 4-7 cm. soft, white then grey, reticulately rugulose; sp. 8-9.

Differs from _R. granulosa_ in stem becoming grey.

=granulosa=, Cke. P. 4-7 cm. exp. often depr. viscid at first, ochraceous, disc darker and granular; s. 4-7 cm. white, granular; g.

nearly free, white; sp. 11-12.

Close to _R. ochroleuca_, differing in granular persistently white stem.

=foetens=, Fr. Foetid. P. 7-12 cm. bullate, then exp. and depr. rigid, viscid, edge at first incurved, tuberculato-sulcate, ochraceous then pale; g. very unequal, forked, whitish; s. 4-5 cm. soon hollow, whitish; sp. 8-10.

[=foetida=, C. Mart. Smell foetid. P. viscid, sulcate, yellow-brown, flesh under cuticle brown, rest white; g. forked near stem, white then yellow; s. very fragile, hollow, white, often spotted red below. Mild.

=consobrina=, Fr. P. 6-8 cm. exp. depr. viscid, edge even, brown or dark grey, flesh grey under the cuticle; g. forked, white; s. 4-6 cm. white then grey; sp. 8-9 7.

var. _sororia_, Fr. Edge of p. striate.

=pectinata=, Fr. Smell nauseous. P. 5-7 cm. exp. then depr. or broadly infundib., rigid, brownish tan then pale except disc, viscid, margin sulcate, flesh yellowish under cuticle; g. attenuato-free, equal, white; s. rigid, striate, white; sp. 8-9.

Differs from _R. consobrina_, var. _sororia_ in tubercular sulcate edge, and gills not connected by veins.

[=intermedia=, Karst. Acrid. P. exp. depr. irreg. viscid, edge even, at length sulcate and tuberculose, tawny, disc darker, discoloured; g.

white then yellowish; s. white.

Near to _Russ. integra_, differs in taste and colour.

=sardonia=, Fr. P. 5-8 cm. plane, wavy, viscid, edge even, dingy yellow, then pale; g. adnate, closely crowded, white then yellowish; s. 3-5 cm.

white often tinged red; sp. 9-10.

Differs from _R. rosacea_ and _R. expallens_ in yellowish colour.

++ _Pileus red or purplish._

=emetica=, Fr. P. 6-9 cm. exp. depr. shining, rosy to blood red, then pale or white, edge at length sulcate, flesh white, red under cuticle; g. free, white; s. 4-7 cm. even, white or tinged red; sp. 7-8.

Poisonous.

var. _Clusii_, Fr. Flesh and gills tinged yellow.

=rosacea=, Fr. P. 5-9 cm. exp. unequal, viscid then dry and spotted, rosy; edge acute, even; g. adnate, white; s. 3-5 cm. white or tinged rose; sp. 7-8.

Differs from _R. sanguinea_ in irregular, often excentric p. and broader gills.

=sanguinea=, Fr. P. 5-9 cm. exp. depr. or infundib. polished, blood-red then pale, edge acute, even; g. decur. closely crowded, white; s. 4-7 cm. striate, white or tinged red; sp. 9-10.

_R. rubra_ differs in rigid p. and g. tinged yellow.

=fragilis=, Fr. P. 3-4 cm. thin, fragile, exp. flesh colour or red, soon pale, rather viscid, edge tubercular-striate; g. thin, crowded, ventricose, white; s. 3-5 cm. white, polished; sp. 8-10 8.

var. _nivea_, Cke. Entirely white.

var. _violacea_, Q. P. violet, with narrow pale edge.

var. _fallax_, Cke. Disc of p. very dark, rest pale reddish purple.

=Queletii=, Fr. P. 5-8 cm. soon plane, viscid, dark violet, edge slightly striate, lilac; g. white; s. 3-5 cm. purple; sp. 7-8.

var. _purpurea_, Cke. (= _R. purpurea_, Gillet). Stem whitish, tinged rosy at middle part; g. pale yellow.

MYCENA, Fr.

I. CALODONTES. _Edge of gills denticulate, dark coloured._