Chapter 13
delica_, Ma.s.s. Fung. Fl. III, 53, _Lact. exsuccus_, Otto, &c.) but differs in polished pileus, pure white gills, &c.
=chloroides=, Bresad. (= _Lact. exsuccus_, Otto; _Agaricus chloroides_, Krombh.; _Russula delica_, Ma.s.s, &c. not of Cooke). P. 8-12 cm. depr.
edge involute, whitish, p.u.b.escent, flesh thick, white; g. decurrent, white with a tinge of green, connected by veins, forked; s. 3-5 cm.
stout, white, tomentose, sometimes with a pale green zone at apex; sp.
8-9.
Differs from _R. delica_ in p.u.b.escent pileus and stem, and green tinted gills.
++ _Pileus clear yellow._
=citrina=, Gillet. P. 4-6 cm. slightly viscid, convex then depr.; g.
broadest in front, forked, white; s. 4-7 cm. white, solid, slightly rugulose; sp. 7-8.
=fingibilis=, Britz. P. 4-5 cm. exp. depr. even, slightly viscid; g.
almost free, white; s. 3-5 cm. white, becoming hollow; sp. 7-9.
+++ _Pileus greenish or olive._
=olivascens=, Fr. P. 5-8 cm. exp. umbil. olive disc becoming yellowish, edge even; g. white then tinged yellow; s. 2-4 cm. stout, firm, even; sp. 9-10.
=heterophylla=, Fr. P. 5-8 cm. exp. depr. even, polished, greenish, yellow-brown, &c., disc becoming ochre, flesh white; g. very narrow, closely crowded; s. 2-3 cm. solid, white; sp. 7-8.
var. _galachroa_, Fr. P. milky white then greenish.
Differs from _R. cyanoxantha_ in very narrow, crowded gills.
[=smaragdina=, Q. P. thin, viscid, somewhat zoned, clear green, edge white; g. narrow, white; s. slender, pruinose, white; taste mild.
=azurea=, Bres. P. 4-5 cm. exp. depr. pale glaucous green, with white bloom; g. pale cream colour; s. 2-3 cm. white, rugulose; sp. 8-9.
Differs from _R. cyanoxantha_ in white meal on the pileus.
=virescens=, Fr. P. 7-12 cm. exp. umbil. dingy opaque green, innately flocculose, areolately cracked; g. rather crowded, forked; s. 4-6 cm.
stout, white; sp. 8-9. Edible.
[=luteo-viridans=, C. Mart. P. convex then depr. then edge erect and sulcate, pellicle viscid, separable, yellow with green or brown stains; g. broad; s. reticulated, base narrowed. Acrid.
var. _bicolor_, C. Mart. Disc of p. yellow, edge brown; g. dark ochre.
var. _purpurea_, C.
=furcata=, Fr. P. 6-10 cm. rigid, depr. sometimes subinfund. even, dark lurid green, even, frosted with a white silkiness; g. adnato-decur.
thickish, forked; s. 4-7 cm. firm, even, white; sp. 7-8.
var. _pictipes_, Cke. S. rosy at apex, greenish below.
var. _ochroviridis_, Cke. Disc of p. olive or sooty, ochraceous towards edge.
=aeruginea=, Lindbl. P. 6-9 cm. exp. darker disc depr., verdigris green, edge striate; g. narrow behind, slightly adnexed, pure white; s. 4-5 cm.
firm, even, persistently white; sp. 8-10.
++++ _Pileus red, brownish, purple, sometimes with green intermingled._
=lepida=, Fr. P. 6-9 cm. compact, depr. not polished, blood red, becoming pale, minutely cracked into squamules; g. much forked; s. 3-5 cm. even, white with rosy tinge; sp. 6-8.
=atropurpurea=, Kromb. P. 6-8 cm. hard, convex then exp. depr. smooth, even, deep blood red or purple red; g. adnate, white; s. 5-6 cm. white or tinged red.
Differs from _R. rubra_ in being quite mild.
[=cerasina=, C. Mart. P. viscid, depr. subcyathiform, edge sulcate, pellicle separable, cherry-red, disc yellow, flesh purple under cuticle; g. adnato-decur. ochre; s. rugulose, white. Acrid.
=cutefracta=, Cke. P. 6-12 cm. exp. depr. even, purple, dull red, etc., cracking into areolae from edge towards disc; g. adnexed, crowded; s.
6-8 cm. solid, white with tinge of purple; sp. 7-10.
=vesca=, Fr. P. 5-8 cm. exp. depr. flesh colour, disc darker, viscid, rugulose; g. adnate, crowded; s. 3-5 cm. solid, white, reticulately wrinkled; sp. 9-10.
var. _Duportii_, Phil. P. disc rufous, edge bluish, flesh reddish when cut. Smells of crab.
var. _lilacea_, Q. P. violet or purple, flesh violet under the cuticle.
var. _Barlae_, Q. P. peach colour.
=depallens=, Fr. P. 6-9 cm. firm, undulate, viscid, reddish, crimson, or brownish, disc paler at length; g. crowded, forked; s. 3-4 cm. base narrowed, white then grey; sp. 7-8.
Differs from _R. decolorans_ in having white gills.
[=pallida=, Karst. Acrid. P. convex then exp. mostly undulate, rather viscid, constantly pallid, here and there tinged rose, edge even; g.
white, edge sometimes sulphur; s. white, often curved; sp. 5-8.
Differs from _Russula pallescens_ in being more robust and even margin of p.
=cyanoxantha=, Schaeff. P. 5-9 cm. globose then depr. or infundib.
viscid, lilac, purplish, olive green, &c., edge generally bluish; g.
broad, forked; s. 4-6 cm. even, white; sp. 8-9.
=elephantina=, Fr. P. 6-10 cm. convex, umbil. margin incurved, brownish tan, wavy; g. obtusely adnate, arcuate, rather crowded, thin; s. firm, white; sp. ----.
Differs from _R. nigricans_ and _R. adusta_ in not turning black or red when old.
=mustelina=, Fr. P. 5-7 cm. depr. edge upturned, even, opaque, brownish or dingy yellowish, flesh persistently white; g. crowded, thin, connected; s. 4-5 cm. even, white; sp. 7-8.
II. Taste acrid.
* _Gills yellow or ochraceous._
+ _Pileus yellow or ochraceous._
=fellea=, Fr. Every part, outside and inside, pale ochraceous or straw colour, very acrid. P. 3-7 cm. exp. not becoming pale; g. adnate; s.
even, 4-6 cm.