a_ and _L. lazulina_ by growing on wood.

=chalybea=, Pers. P. 2-3 cm. convex, subumb. not striate, flocculose
then squamulose, dark violet; g. greyish-white, edge rather paler; s.
3-5 cm. blue, not punctate; sp. 10 x 6.

Differs from _L. lazulina_ by p. not being striate.

=lazulina=, Fr. P. 1.5-2 cm. campan. striate, at first glabrous then
cracked into squamules, sooty black; g. adnate, equally narrowed from
stem to edge of p. pallid grey; s. 4-5 cm. blue, not punctate; sp. 10 x
6.

[=Bresadolae=, Schulz. P. subglobose then exp. umbil. and depr. umber,
minutely squamulose; g. pale violet; s. bright blue, base bulbous with
white down; sp. rough, 8-10.

[=Bizzozeriana=, Sacc. P. umb. exp. dusky grey with dark scurf; g. dusky
vinous-purple; s. dusky purple; sp. 7 x 3.

[=Gorteri=, Weinm. P. convex, obtuse, velvety-squamulose, grey then
pale, edge white-fimbriate; g. fuscous purple, shining; s. purple
violet.

*** _Gills fuscous- or dusky-purple._

[=calimorpha=, Weinm. P. conico-convex, umb. densely squamulose, sooty
or black; g. nearly free, ventricose, with a purple sheen, edge black;
s. blackish-purple.

[=aquila=, Fr. P. exp. deeply umbil. bay; g. sinuato-adnexed, very
broad; s. stuffed, fuscous, thickened upwards.

[=pyrenaica=, Pat. and Doas. P. convexo-plane, 4-5 mm. slightly umb.
edge incurved, reddish brown; g. pale red, adnate with a tooth; s.
solid, curved, colour of p.; sp. 5-6.

**** _Gills pallid. Pileus yellow or greenish then pale._

=incana=, Fr. P. 2-3 cm. exp. umbil. glabrous, somewhat virgate,
brownish green; g. adnate with decur. tooth, greenish white; s. 3-5 cm.
shining, brownish green; sp. rough, 8-9.

[=euchlora=, Lasch. P. campan. convex, not striate, yellow-green with
brown fibrils, darker disc impressed; g. adnate; s. squamulosely
fibrillose, greenish-yellow, base aerugineo-tomentose; sp. 10-14 x 6-8.

=formosa=, Fr. P. 2-3 cm. exp. subumbil. slightly striate, yellow
wax-colour with brown adpressed fibrils and scattered squamules; g.
adnate, pallid yellow; s. 4-5 cm. striate, shining, yellow; sp. 10-12 x
8.

var. _suavis_, Lasch. S. becoming bluish.

=chloropolius=, Fr. P. 2-3 cm. exp. striate, livid, centre with black
squamules; g. adnate, pallid; s. 4-5 cm. even, bluish-green; sp. rough,
7-8 x 5. (12-14 x 6-8 Sacc.)

[=pallens=, Karst. P. convex exp. disc slightly depr. glabrous, livid,
pale and shining when dry; g. adnate, seceding; s. pallid, glabrous; sp.
r