Differs from _C. atramentarius_ in solid s. ** _Small; pileus never exceeding 3 cm. high._ =Hendersonii=, Fr. P. subcylindrical then exp. up to 1 cm. apex tawny rest grey, fluted, minutely pruinose; g. free; s. 3-4 cm. with a permanent ring below middle; sp. 10-12 x 6. [=bulbillosus=, Pat. P. 8-10 mm. grey disc yellow, striate, covered with white meal; g. grey; s. 2-3 cm. white, base bulbous, ring loose, median; sp. 8-9 x 6-7. Differs from _C. Hendersonii_ in bulbous stem. [=ephemeroides=, Fr. P. campan. plicato-sulcate, whitish, disc tinged yellow, up to 1 cm. sprinkled with superficial flecks; g. free; s. 2-4 cm. whitish, ring free, base with a pilose bulb; sp. 11-12 x 6-7. Differs from _C. bulbillosus_ in squamulose pileus and strigose bulb. var. _muscorum_, sp. 7-9 x 6-8. [=scauroides=, Godey. P. ovate then campan. striate, white then purplish, floccosely squamulose; g. free; s. white, with a marginate bulb and ring. [=Bresadolae=, Schulz. P. subcylindrical, greyish-white, apex tinged brown; g. black, edge white; s. tapering upwards, white, glabrous, ring deciduous. III. _Volva and ring absent. Veil practically absent; p. either glabrous or with minute innate squamules, especially near the apex, not splitting along the lines of the gills._ * _Gills attached to the stem._ =fuscescens=, Fr. P. 4-6 cm. ovate then exp. not lobed, disc fuscous, rest greyish brown, powdered with meal at first; g. narrow towards the front; s. white, hollow, somewhat fibrillose; sp. 8-10 x 5-6. Differs from _C. atramentarius_ in rufous p. not lobed. [=tergiversans=, Fr. P. conical then exp. 6-12 cm. rusty brown, grooved, cracked into squamules; g. broadly adnate; s. white, apex sulcate. Allied to _C. micaceus_; differs in squamulose and not micaceous p. [=Lerchenfeldii=, Schulz. P. hemispher. apex elevated, brownish grey, edge wavy silvery grey then violet; g. violet, shining; s. fibrillose or squamulose. ** _Gills free._ [=cylindricus=, Fr. P. cylindrical then exp. 8-12 cm. across, rimosely striate, a few adpr. squamules, whitish brown; g. narrow; s. 15-21 cm. equal, fibrillose. [=Mayrii=, Allesch. P. campan. exp. white, striate, small yellow-brown squamules near edge, disc sparingly scaly; g. free; s. white, striate, base globose, marginate, hollow to swollen base; sp. 6-7 x 3-4. Allied to _C. atramentarius_. =flocculosus=, Fr. P. ovate then exp. 4-7 cm. across, dingy white, striate, squamules innate; g. narrow; s. 6-10 cm. white, silky, hollow; sp. 10 x 7-8. Differs from _C. aratus_ in white p., and from _C. lagopus_ in glabrous stem. =squamosus=, Morgan. P. 4-6 cm. sulcate, grey, with persistent spreading brown scales; g. free; s. 9-14 cm. with brown spreading scales up to ring; sp. 9-10 x 5.