[=candida=, Bres. Large. P. fleshy, plano-convex then depr. edge involute, even, p.u.b.escent, white becoming tinged tan; g. much crowded, narrow, attenuato-decur. white then pallid; s. stout, short, white; flesh white; sp. 7 3.

Close to _C. geotropa_ and _C. gigantea_. Differs in pure white colour and in sp.

=gilva=, Pers. P. 5-8 cm. soon depr. and wavy, dingy ochre, flesh same colour; g. closely crowded, ochre; s. 2-2.5 cm. solid, ochre; sp. subgl.

4-5.

=subinvoluta=, Batsch. P. 5-8 cm. convex then depr. tinged brick red, fibrillose, zoned; g. pale tan; s. 4-5 cm. reddish, grooved; sp. ----.

=spinulosa=, W. G. Sm. P. 3-5 cm. depr. gibbous, yellowish pink, edge even, incurved; g. white then pale yellow; s. 5-9 cm. fibrillose, whitish, zoned with tan; sp. globose, spinulose, 8-9.

=splendens=, Pers. P. 5-8 cm. plane then depr. or infund.

pinkish-yellow, shining; g. deeply decur. white; s. 2-3 cm. glabrous, yellow; sp. ----.

Differs from _C. gilva_ in white flesh.

=inversus=, Scop. P. 5-9 cm. convex then infundib. edge involute, rufescent; g. soon tinged rufous; s. 4-6 cm. hollow, rigid, paler than p. flesh pallid; sp. subg. 4-5. Often tufted.

=flaccidus=, Sow. P. 5-8 cm. thin, flaccid, umbil. then infund. edge reflexed, tawny or rusty; g. yellowish; s. 3-4 cm. rusty, rather wavy; sp. 4-5 3-4. Often tufted.

var. _lobatus_, Fr. Tufted. P. darker, edge lobed.

[=rhodoleuca=, Rom. Fleshy, almost glabrous, in dry weather pure white except gills which are tinted rose; in rainy weather everywhere inside and out deep rose, gills darkest. P. obconic, convex or almost flattened above; sp. 6-9 5-6.5.

[=zizyphana=, Viv. P. convex then infundib. often excentric, rufous brown, flesh reddish white; g. yellow; s. equal, pallid.

[=cervina=, Hoffm. P. plano-infundib. oblique, glabrous, edge convex, greyish fawn, subzoned; g. pallid, edge darker; s. cylindrical, base tuberous.

[=garidelli=, Fr. P. convex, at first umbil. edge incurved, deep rose to flesh colour; g. decur. crowded, edge red; s. short, stout, flesh colour. Edible.

[=ambigua=, Karst. P. tough, orbicular, convex, obtuse, glabrous, even, pallid rufous tinged pink then pale; g. adnato-decur. pallid; s.

glabrous, wavy, whitish, base woolly; sp. 4-5 3.

[=paropsis=, Fr. P. plano-depr. glabrous, edge spreading, flaccid, rufous or flesh-colour; g. narrow, shining white; s. cylindrical, base rather bulbous.

=vermicularis=, Fr. P. 3-5 cm. convex, umbil. then infund. edge incurved, often wavy, reddish tan then pale, flesh same colour; g.

closely crowded, white; s. 3-4 cm. hollow, elastic, striate, paler than p.; sp. 5 3.

[=cacaba=, Fr. P. flaccid, infundib. glabrous, edge broadly reflexed, sooty; g. very deeply decur. closely crowded, dark grey; s. striate, base thickened, downy.

=senilis=, Fr. P. 4-5 cm. infundib. brownish tan, concentrically cracked, edge spreading; g. narrow, soon colour of p.; s. 2-3 cm. solid, glabrous, pallid; sp. 5-6 4.

+++ _Pileus clear white._

=catina=, Fr. P. 4-5 cm. plane then infundib. glabrous, white, discoloured when old; g. decur. somewhat crowded, white; s. 3-7 cm.

elastic, white; sp. ----.

_C. infundibiliformis_ differs in not being umb. and in being glabrous.

_C. phyllophila_ differs in adnate gills.

=tuba=, Fr. White. P. 5-8 cm. umbil. margin even, shining with a silky l.u.s.tre when dry; g. broad, closely crowded, decur.; s. 4-5 cm. equal, soon hollow and compressed; sp. ----.

Differs from _C. pithyophila_ in umbil. p.; g. deeply decurrent.

=ericetorum=, Bull. White. P. 2-3 cm. fleshy, subturbinate, glabrous, shining when dry; g. distant, connected by veins; s. 2-3 cm. glabrous; sp. ----.

Resembling _Hygr. niveus_ in appearance.

B. _Pileus thin, hygrophanous, soft, watery._

**** CYATHIFORMES. _P. thin, depressed then cup-shaped. Colour dingy when moist._

=cyathiformis=, Bull. P. 3-7 cm. deeply depr. edge incurved, sooty-brown then pale; g. dingy; s. 5-9 cm. stuffed, elastic, narrowed upwards, reticulately fibrillose, sooty; sp. ----.

var. _cinerascens_, Fr. Smaller. P. pale grey-brown; g. tinged yellow.

=expallens=, Pers. P. 3-5 cm. plane then deeply depr. greyish brown then pale, margin soon expanded; g. greyish white; s. 4-5 cm. greyish white, hollow, equal; sp. ----.

=obbata=, Fr. P. 2-3 cm. plane, umbil. then deeply depr. sooty brown, edge at length striate; g. decur. distant, greyish, pruinose with white; s. 4-5 cm. glabrous, greyish brown, hollow; sp. ----.

[=fritilliformis=, Lasch. Convex-umbil. then infundib. glabrous, grey then pallid, becoming fuscescent when dry, edge sublobed; g. thickish, pallid; s. subtomentose, thickened upwards.

[=calatha=, Fr. P. exp. infundib. hygr. edge soon spreading, even, sooty; g. deeply decur. violet then reddish; s. solid, tough, striately rugose, narrowed below, violet then reddish.

=pruinosa=, Lasch. P. 4-5 cm. umbil. then deeply depr. brown, powdered with grey bloom; g. decur. crowded, narrow, dingy; s. 3-5 cm.

fibrillose, pallid; sp. ----.

=concava=, Scop. P. 3-5 cm. broadly and deeply umbil. flaccid, wavy, dark grey; g. decur. narrow, smoky; s. 2-3 cm. equal, glabrous, grey; sp. ----.

[=vibecina=, Fr. P. exp. then infundib. greyish livid then pale, margin soon extended, striate; g. deeply decur. greyish white; s. hollow, glabrous, rather wavy.

[=Queletii=, Fr. P. convex, umbil. whitish with brown squamules when dry; g. deeply decur. whitish; s. flocculose, whitish.

=suaveolens=, Fr. Fragrant. P. 2-3 cm. convex then concave, discoid, buff, hygr. margin striate; gills crowded, pallid; s. 4-5 cm. thinner upwards, tinged brown; sp. 8 5.

Among gra.s.s. Differs from _C. fragrans_ in concave pileus with striate margin.

=brumalis=, Fr. P. 1.5-2.5 cm. umbil. then deeply depr. flaccid, glabrous, wavy, livid, pale when dry; g. pallid; s. 4-5 cm. glabrous, whitish, often curved; sp. 4-5 3-4.

***** ORBIFORMES. _Pileus rather fleshy, convex then flattened or depressed, polished; g. adnate; dingy, becoming pale._

+ _Gills grey or olive._

=orbiformis=, Fr. P. 4-5 cm. convexo-plane, even, smoky grey; g. greyish white; s. 5-7 cm. naked, narrowed upwards, grey; sp. ----.

Differs from _C. cyathiforme_ in plane p.

[=applanata=, Secr. P. exp. disc depr. flaccid, lurid then h.o.a.ry; g.

greyish white; s. fuscous with white down, pallid and silky fibrillose upwards.