Part 27

=confluens=, Pers. P. 2-4 cm. obtuse, flaccid, glabrous, rufescent then pallid; g. closely crowded; s. 6-12 cm. more or less compressed, rufous, everywhere with white down; sp. subgl. 7-9.

Differs from C. hariolorum in densely tufted habit.

=ingrata=, Schum. P. 2-3 cm. convex, umb. even, brownish tan; g. free, pallid; s. 5-10 cm. twisted, subcompressed, with white meal above, umber and naked below, equal; sp. ----.

=conigena=, Pers. 1-2 cm. exp. subumb. glabrous, reddish-yellow or pale; g. free, much crowded, pallid; s. 3-7 cm. pulverulent, pallid, base strigose, rooting; sp. 4-5 x 3.

Differs from C. tenacella and C. esculenta in free, crowded, narrow gills.

var. lutea, Vogl. P. yellow; g. densely crowded, white.

=cirrhata=, Fr. 1-1.5 cm. exp. at length umbilicate, silky, opaque, white; g. adnate; s. 2-5 cm. slender, wavy, whitish, with a downy root; sp. 4-5 x 2-3.

Differs from C. conigena in adnate gills, and from C. tuberosa in downy rooting stem not springing from a sclerotium.

=tuberosa=, Bull. P. about 1 cm. white, exp. umb. even; g. adnate; s. 1.5-4 cm. thin, white, root glabrous and springing from a sclerotium; sp. 4-6 x 2-3.

=racemosa=, Pers. P. up to 1 cm. convex, papillate, grey, subtomentose; g. adnate; s. 3-5 cm. base dark, springing from a blackish sclerotium; several minute stems with abortive pilei often spring from the stem; sp. ----.

III. LAEVIPES. Stem thin, equal, fistulose, naked, glabrous (except base), not conspicuously striate.

* Gills broad, lax, usually more or less distant.

=collina=, Scop. P. 2-5 cm. exp. umb., brownish then pale; g. adnexed then free; s. 6-10 cm. equal, even, glabrous, base abrupt, downy; sp. ----.

=thelephora=, Cke. and Mass. P. 2-3 cm. camp. lax, umb. apiculate, dingy ochraceous, disc darker; g. adnate; s. 6-10 cm. equal, hollow, glabrous, base dark; sp. 9 x 7.

=ventricosa=, Bull. P. 2-3 cm. camp. umb. glabrous, pale tan; g. with rufous tinge; s. 6-10 cm. rufescent, base ventricose, rooting; sp. ----.

Differs from C. dryophila in ventricose, rooting stem.

=leucomyosotis=, Cke. Strong scented, rather fragrant. P. 2-3 cm. exp. grey then paler; g. adnate, sinuate, white; s. 8-12 cm. equal, brittle, pallid; sp. 6 x 4.

=Stevensoni=, B. and Br. P. 1-1.5 cm. obtuse, viscid, pale yellow; g. broadly adnate, broad, white; s. 2-3 cm. rufous, equal, fibrillose, rooting; sp. 10-11 x 7-8.

Differs from C. esculenta in broad, adnate gills.

=psathyroides=, Cke. Ivory white. P. 1.5-2 cm. broad and nearly 2.5 cm. high, camp. obtuse, rather viscid; g. broadly adnate, broad; s. 6-10 cm. equal, straight, hollow; sp. 15 x 7.

=xanthopoda=, Fr. P. 2.5 cm. exp. umb. glabrous, lax, yellow or tan colour then pale; g. truncate behind; s. 6-10 cm. equal, hollow, tough, glabrous, yellowish, strigosely rooting; sp. ----.

Differs from C. dryophila in umbo, broad gills, and strigosely rooting stem.

=nitellina=, Fr. P. 2-4 cm. exp. even, shining, tawny, hygroph.; g. adnate, white then tinted; s. 5-8 cm. equal, rigid, glabrous, tawny; sp. ----.

=succinea=, Fr. P. 2-2.5 cm. even, exp. then subdepressed, pale rufous, often cracked; g. adnexed, broad, thickish, serrulate; s. 2-4 cm. polished, rufescent, not rooting; sp. ----.

Differs from C. dryophila by broader, thicker, less crowded gills, and from C. xanthopoda by absence of an umbo.

=nummularia=, Bull. P. 2-3 cm. exp. subdepressed round small umbo, pallid; g. free; s. 3-5 cm. glabrous, pallid, apex thickened; sp. ----.

=esculenta=, Wulf. P. 1-2 cm. orbicular, exp. obtuse, glabrous, pallid tan; g. adnate, lax, whitish; s. 2.5 cm. indistinctly hollow, even, polished, yellowish tan, rooting, base glabrous; sp. ----.

C. tenacella differs in fibrillose rooting base, and snow-white gills.