sprinkled with rosy meal.

[=bona=, Schwalb. P. often irreg., lilac, centre pallid or obscure,
velvety; g. adnexed, pale yellow then pale egg-yellow; s. unequal, often
curved, white, hollow; taste mild; 8-10.

[=grisea=, Fr. P. exp. depr., polished, grey or olive, disc purplish,
edge even, flesh under cuticle violet; g. adnate, white then yellow s.
even, polished, white.

*** _Gills white or creamy white._

+ _Pileus white or cream colour_ (often becoming blackish when
old).

=virginea=, Cke. and Mass. Persistently pure white. P. 4-5 cm. soon
exp., viscid, polished when dry; g. subdecur., narrow, repeatedly
forked, veined; s. 4-5 cm. solid, rugulose; sp. 4-5.

=semicrema=, Fr. P. 6-9 cm. persistently white, edge involute, even,
glabrous; g. decur. crowded, white; s. 3-5 cm. white, becoming blackish;
sp. 8-9.

Differs from _R. adusta_ and _R. densifolia_ in persistently white
p.--flesh also--and g., and from _R. delica_ in flesh of stem becoming
blackish.

=lactea=, Fr. Entirely white or pallid. P. 4-5 cm. obtuse, even,
unpolished then minutely cracked; g. free, thick, distant; s. 2-4 cm.
solid, stout; sp. 7-9.

var. _incarnata_, Q. P. white tinged rose, then pale tan.

=nigricans=, Fr. P. 7-12 cm. exp. umbilicato-depr. whitish, soon
sooty-olive, flesh white, reddish when broken; g. rounded, very thick
and distant; s. 3-6 cm. stout, solid, pallid then black; sp. 8-9. Every
part black when old.

=adusta=, Fr. P. 6-9 cm. exp. depr. white then brownish, at length
scorched; g. thin, crowded, pallid; s. 3-5 cm. solid, pallid then dusky
grey; sp. 8-9.

Differs from _R. nigricans_ in much closer gills, and in flesh not
changing to red.

=densifolia=, Gillet. P. 3-9 cm. convex then depr. white then brownish,
flesh red when broken; g. thin, crowded, pallid; s. 3-5 cm. slightly
mealy, white then grey, at length blackish; sp. 7-8.

Differs from _R. adusta_ in flesh turning red, and from _R. nigricans_
in crowded gills.

=delica=, Fr. White. P. 8-14 cm. exp. umbil. polished, edge incurved,
even, glabrous; g. decur. thin, distant, white; s. 3-5 cm. solid,
compact; sp. 8-10 x 6-7.

This species has been confounded with _R. chloroides_, Bres. (= _R.
delica_, Mass. 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_, Mass, &c. not of Cooke). P. 8-12 cm