=excisa=, Lasch. (non Berk.). P. 2-3 cm. camp. then obtuse, greyish fuscous or pallid; g. scarcely adnexed, narrowed behind, very broad in front, pallid; s. 2-3 cm. tough, even, grey, rooting; sp. ----. Differs from _M. polygramma_ in smooth stem. var. _fagetorum_, Fr. Slender. P. even, striate to middle, smoky or livid then pale; g. joined to a collar; s. incurved at base, fixed to leaves by down. =rugosa=, Fr. P. 2-5 cm. camp. then exp. subumb. tough, irreg. radially rugulose, greyish; g. arcuately adnate, white then tinged grey; s. 3-4 cm. tough, even, glabrous, pallid; sp. ----. =sudora=, Fr. White. P. 2-3 cm. umb. striate, viscid; g. obtusely adnate, sometimes tinged pink; st. 6-10 cm. even, dry, rooting; sp. ----. =galericulata=, Scop. P. 2-5 cm. conic camp. exp. striate up to umbo, dry, brownish, livid, &c.; adnate with decurrent tooth, connected by veins, pinkish when old; s. 5-8 cm. polished, even, glabrous; sp. 6-7 x 4. _M. rugosa_ differs from present sp. in having grey gills and rugulose pileus. [=simillima=, Karsten. P. conico-campan. even, dry, glabrous, livid or dingy pallid; g. emarginato-decur. crowded, white, very slightly tinged rose; s. fragile, polished, even, glabrous, base curved, rooting; sp. ----. Very near to _Mycena galericulata_, differing in being fragile and in becoming pale. =polygramma=, Bull. P. 3-7 cm. conic camp. subumb. dry, striate, dark grey or blackish-blue when young; g. pale pinkish-grey tinge; s. 7-12 cm. rigid, tough, shining, longitudinally striate, strigosely rooting, grey; sp. 11-12 x 6. Differs from _M. plicata_ in striate stem. [=inclinata=, Fr. P. camp. obtuse, striate to middle, everywhere brownish; g. adnate, whitish, base grey; s. rigid, twisted, pruinosely fibrillose, upwards interruptedly striate. =parabolica=, Fr. P. 2-5 cm. oval then camp. striate to middle, disc blackish-violet, margin paler, becoming pale; g. adnate; s. 4-7 cm. even, glabrous, base strigose, dark coloured; sp. 11-12 x 6. Differs from _M. galericulata_ in absence of decurrent tooth of gills, also their pinkish colour. =tintinabulum=, Fr. P. 2-3 cm. tough, camp. even, bay, yellow brown, pallid, &c., viscid when moist; g. adnate with a decurrent tooth, crowded; s. 2-3 cm. even, glabrous, pallid, strigosely rooting; sp. 7-8 x 5. Differs from _M. galericulata_ in short stem and even pileus. =Berkeleyi=, Mass. (= _excisa_, B.). P. 3-7 cm. camp. striate up to umbo, hygr. dingy brown then paler; g. broadly sinuate with decurrent tooth, tinged flesh colour; s. 7-12 cm. long, purplish brown, base rooting; sp. 5 x 3.5. [=laevigata=, Lasch. Constantly white. P. hemispher.-exp. obtuse, even when dry; g. with decur. tooth, crowded, distinct, joined to a collar; s. even, glabrous, lubricous, base strigose. Requires to be carefully distinguished from white forms of _M. galericulata_ and _M. rugosa_. S. lubricous when moist, not viscid.