d, firm, elastic.

[=conglobatum=, Vit. Densely clustered. P. unequal, even, edge thin,
inflexed, somewhat pruinose, blackish fuscous; g. free; s. stems solid,
ventricose, subtomentose, springing densely from a common tuber.

=arcuatum=, Bull. P. 5-8 cm. brownish white then tan, exp. margin
incurved, glabrous, flesh-coloured; g. arcuate, crowded, white; s. 4-6
cm. solid, fibrilloso-squamulose, pale brown, base darker, bulbous; sp.
----.

Differs from _T. panaeolum_ in having white gills, and from _T.
melaleucum_ in having coloured flesh.

var. _cognatum_, Bull. Larger. Gilvous outside and inside or dingy tan;
p. obtuse, discoid; g. tan.

_oreinum_, Fr. P. 2-3 cm. soon plane, obtuse, glabrous, fuscous, even;
g. rounded, free, white; s. solid, short, 2-3 cm. whitish, apex white
squamulose; sp. ----.

Separated from _T. humile_ by the gills projecting beyond the margin of
pileus.

=album=, Schaeff. Entirely white, taste acrid. P. 6-9 cm. convex then
depr. even, glabrous, dry, disc sometimes tinged yellow; g. rather
crowded; s. 6-8 cm. narrowed upwards, solid, elastic; sp. 5-6 x 3.

var. _caesariatum_, Fr. P. white or yellowish, exp. fibrillosely silky,
then glabrous; s. slender, fragile, apex rather mealy; g. nearly free.

[=lentum=, Post. Entirely white not becoming spotted. P. convex,
unpolished and at first rather velvety, disc tinged pallid when old; g.
sinuate or subdecurr.; s. base narrowed, apex usually longitudinally
costate; sp. 7.5-10 x 4.5-7.

[=raphanicum=, Karst. Smell very strong, like radishes. P. convex, often
gibbous, white, disc tinged tan; g. white; s. rooting, flocculose above;
sp. glob. 3-4.

=leucocephalum=, Fr. Pure white, smell mealy. P. 3-4 cm. plane, even,
moist, glabrous after silky veil has gone; g. crowded; s. 5-6 cm.
hollow, smooth, cartilaginous, tough, rooting; sp. 9-10 x 7-8.

_T. album_ differs in having no smell, and _T. inamoenum_ in strong
disagreeable smell and very broad gills.

** _Gills discoloured._

=acerbum=, Bull. P. 7-10 cm. expanded, margin at first involute, sulcate
and rugulose, viscid, whitish then tinged rufous; g. narrow rufescent;
s. 5-8 cm. pale, apex squamulose; sp. subg. 5-6.

=militare=, Lasch. Smell and taste unpleasant. P. 8-15 cm. convex,
gibbous, margin even, viscid, cinnamon; g. white, torn, then spotted; s.
7-11 cm. solid, squamulose, pallid, base subbulbous; sp. ----.

Differs from _T. civile_ in strong smell and spotted gills.

=civ