[=dictyorhizus=, D. C. White. P. very thin, orbicular, sinuate, subsessile, base reticulately-fibrillose; g. simple, unequal; sp. 6 long.
=acerosus=, Fr. P. 2-3 cm. very thin, reniform, plane, striate, sublobed, grey, silky white when dry; g. narrow, crowded, grey; s. obsolete, base substrigose; sp. glob. 5-6.
[=Severinii=, Com. Shining white. Velvety then almost glabrous, orbicular, edge entire, incurved; g. decur. simple; s. short, incurved.
C. RESUPINATI. _Pileus at first resupinate; gills radiating from an excentric point; then reflexed, sessile._
=porrigens=, Pers. White. P. 4-7 cm. thin, tough, resup. then ascending, ear- or fan-shaped, glabrous upwards; g. very narrow; sp. 7-8 × 6.
Resembling _P. petaloides_ in habit but white, and no stem-like base.
[=pinsitus=, Fr. P. fleshy, soft, horizontal, silky-villose, wavy, hygr. dingy then white; g. broad, distinct; sp. rough, 10-11 long.
[=nidulans=, Pers. P. subreniform, tomentose, yellow; g. broad, tawny-orange; sp. 3-5 × 1.
[=caesiozonatus=, Rab. P. subsessile, tough, plane then depr. behind, downy, ochre-brown, zoned with bluish grey; g. broad, brownish yellow.
=septicus=, Fr. P. 1-2 cm. rather fleshy, resup. then reflexed, pubescent, white; s. thin, 2-3 mm. incurved, disappearing; g. distant; sp. 8-10 × 6.
_Claudopus variabilis_ differs in tinted gills and spores.
[=roseolus=, Q. P. convex, conchoid, translucent, striate, rather woolly, rosy-purple; g. rosy, edge darker; s. curved, downy, colour of p.; sp. 8.
** _Pileus fleshy, striate, upper surface gelatinous, or with a viscid pellicle._
=mastrucatus=, Fr. P. 4-5 cm. resup. then exp. and horizontal, often lobed, brown, with erect bristly squamules; g. broad, greyish white; sp. ----.
[=rivulorum=, Pat. and Doas. P. subgelatinous, pellucid, rusty brown and covered with white down, horizontal or ascending; g. grey then vinous; s. lateral, tubercular, downy, white, rosy when touched; sp. 4-6.
[=tremens=, Q. P. reniform or flabellate, diaphanous, rosy-violet, tremelloid; g. sinuate, pinkish; s. lateral, colour of p.; sp. rough, 6-7.
=atrocoeruleus=, Fr. P. 2-5 cm. fleshy, downy, dusky blue; g. broad, whitish; sp. glob. 2-3.
P. sometimes brownish, and g. sometimes yellowish.
[=myxotrichus=, Lév. P. reniform, at first viscid, becoming spongy, covered with white down, sessile or with a short stem; g. rather broad, crowded; sp. 10-12 long.