Chapter II: ROTULAE. Stem filiform, flaccid, base entering matrix

abruptly._

* _Stem very glabrous, shining._

=rotula=, Fr. P. 4-7 mm. umbilicate, plicate, whitish or disc slightly tinged; g. attached to a free collar encircling the stem; s. 2-4 cm. glabrous, blackish, shining; sp. 6 x 3-4.

[=littoralis=, Q. P. umbil. plicate, white; g. free, distant; s. horny, umber, apex pale, base downy.

=graminum=, Berk. P. up to 1 cm. umb. striate or sulcate, pale rufous, disc darker; g. attached to a collar encircling stem, few in number; s. 2-4 cm. black, shining, glabrous, apex paler; sp. subgl. 3-4.

[=epodius=, Bres. P. convexo-campan. exp. usually umb. and depr. edge at first incurved, sulcate, centre usually reticulated, reddish-yellow then pale; g. free, white then yellowish; s. very glabrous, rufescent then bay, apex hyaline, base bulbillose substrigose; sp. 20-28 x 2.5-4.

[=Menieri=, Boud. P. 1-3 mm. excentric, broadly subumb. punctulate tawny; g. fold-like, few, branched, paler than p.; s. curved, tawny, base black; sp. 18-25 x 5-7.

[=faveolaris=, Fr. P. sulcate, exp. disc coloured; g. attached to a ring, anastomosing to form cells; s. glabrous, subulate, bay below.

=androsaceus=, Fr. P. 1-1.5 cm. whitish, umbilicate striate; g. adnate to stem; s. 3-6 cm. black, glabrous, polished; sp. 7 x 3-4.

[=sclerotipes=, Bres. P. thin, convex, edge incurved then plane, ruguloso-striate, shining white, umbil. yellowish, subflocculose; g. distant, adnate, white, edge fimbriate; s. filiform, tinged rufescent downwards, adnate to a rufescent sclerotium.

Passed as _Collybia cirrhata_ very frequently. The latter differs in not springing from a sclerotium. _Collybia tuberosa_ differs in growing on fungi.

[=Bulliardi=, Q. P. plicate, dingy yellow brown; g. whitish; s. bay.

=splachnoides=, Fr. Inodorous. P. up to 1 cm. whitish, subumbilicate, striate; g. subdecurrent; s. 2-4 cm. polished, reddish-brown; sp. 8 x 5.

Similar in habit to _M. perforans_, but no smell, and white subdecurrent gills.

[=limosus=, Q. Very minute. P. plicate, diaphanous, whitish; s. capillary, brownish.

=flosculus=, Q. P. white, umbil. sulcate; g. adnate, white; s. short, incurved, bay, apex pale.

=Curreyi=, B. & Br. P. up to 1 cm. pale rufous, coarsely striate, umb. tawny; g. attached to collar; s. 2-3 cm. polished, blackish, apex white; sp. 9 x 5-6.

** _Stem velvety or pilose._

=perforans=, Fr. Foetid. P. up to 1 cm. whitish or tinged rufous, plane, not striate, rugulose; g. adnate; s. 2-3 cm. minutely velvety, blackish brown; sp. 4 x 3.

=insititius=, Fr. Inodorous. P. 1-1.5 cm. subumbilicate, at length plicate, pale yellow-brown then whitish; g. broadly adnate, simple, unequal, distant; s. 2-3 cm. floccose or scurfy, reddish-brown; sp. 4 x 2.5.

=Hudsoni=, Pers. P. 2-3 mm. rugulose, tinged brown, covered with spreading purplish hairs; g. white; s. 1-1.5 cm. with hairs like the pileus; sp. 5 x 3.

[=buxi=, Fr. P. sulcate, minutely squamulose, tawny; g. few; s. blackish purple, pilose below, glabrous above.

=epichloe=, Fr. P. 4-5 mm. plane, papillate, even, whitish, disc darker; g. broadest behind; s. 2-3 cm. bay, coarsely striate, striae setulose; sp. 3 x 2.

=actinophorus=, B. & Br. P. 2-3 mm. umbilicate, pale bay with darker radiating lines, wrinkled when dry; g. adnexed; s. 1-2 cm. paler than pileus; sp. subgl. 3-4.

=saccharinus=, Batsch. P. 2-4 mm. subpapillate, glabrous, sulcate, whitish; g. broadly adnate, connected by veins; s. 1.5-2.5 cm. reddish, minutely flocculose, then almost glabrous; sp. 5 x 3.

Resembling _M. polyadelphus_, but not clustered, and papillate pileus.

=epiphyllus=, Fr. P. 4-6 cm. umbilicate, wrinkled, white; g. adnate, distant, veined; s. 3-5 cm. bay, minutely velvety, apex pale; sp. 3 x 2.