[=planipes=, Brig. Caespitose. P. orbicular, exp. rather viscid, bay; g. free; s. colour of p., rooting. [=Gussonei=, Inzeng. P. convex, subumb., rather striate, brick-red, edge dingy yellow; g. adnate, broad, crimson; s. compr. ochre with a crimson zone. ** _Gills narrow, crowded._ =acervata=, Fr. Caespitose. P. 4-7 cm. exp. obtuse, then umb., reddish then pale; g. free, narrow, closely crowded; s. 4-9 cm. equal, glabrous, rufous, base downy, rooting; sp. 7-8 x 3.5. Differs from _C. confluens_ in glabrous stem, and from _Marasmius erythropus_ in narrow, closely crowded gills. =dryophila=, Bull. P. 2.5 cm. obtuse, then subdepr. reddish or pale tan, even; g. sinuate, crowded, narrow; s. 2-4 cm. hollow, glabrous, rufescent or yellowish; sp. 7-8 x 4. =aquosa=, Fr. Every part honey-colour. P. 2-2.5 cm. obtuse, hygr. margin striate; g. rounded and free, crowded; s. 3-6 cm. polished, surface slightly wavy; sp. 6 x 4. var. _Bulliardii_. P. reddish ochre then pale; s. tawny. =extuberans=, Fr. P. 2-3.5 cm. exp. umb. prominent, bay or umber; g. crowded, narrow; s. 4-7 cm. equal, straight, glabrous, pallid, rooting; sp. ----. =exsculpta=, Fr. P. 2-4 cm. exp. umbilicate, persistently tawny brown; g. closely crowded, sulphur-yellow; s. 2-3 cm. yellow; sp. ----. [=luteifolia=, Gill. P. exp. edge lobed, irreg. reddish or cinnamon; g. sulphur yellow; s. glabrous, colour of p. [=cinnamomaeifolia=, Gill. P. convex, subdepr. with a slight umbo, whitish yellow; g. crowded, pale cinnamon; s. reddish. =macilenta=, Fr. Entirely yellow. P. 2-2.5 cm. obtuse, even, glabrous; g. linear; s. minutely fistulose, glabrous, tough, rooting, 2-3 cm.; sp. 5-6 x 3. =clavus=, L. P. 2-6 mm. obtuse, even, orange-red, shining; g. crowded, white; s. 1.5-2.5 cm. very slender, whitish, glabrous; sp. 4 x 2.5. _Mycena acicula_ differs in yellow gills and rooting stem. =ocellata=, Fr. P. 1-1.5 cm. exp. disc depr. round pale small umbo, rufous or yellowish; g. crowded, white; s. 3-5 cm. slender, tough, glabrous, tinged fuscous, base rooting, fibrillose; sp. ----. Distinguished from _C. cirrhata_ by glabrous stem. [=floridula=, Fr. P. exp. obtuse, slightly striate, tinged flesh colour then pale; g. pale rose colour; s. pellucid, white. [=Micheliana=, Fr. Pure white. P. obtuse, margin slightly striate; g. adnexed, crowded; s. thin, glabrous, base slightly thickened. =muscigena=, Schum. Pure white. P. 2-4 mm. obtuse, even; g. adnate; s. 1.5-2.5 cm. very slender, wavy, equal, glabrous; sp. ----. Known from small sp. of _Mycena_ by the broadly adnate gills and even pileus. [=ludia=, Fr. Pure white. P. subumb. exp. revolute, undulate and irreg. lobed, even; g. rather distant; s. slender, wavy, naked, root creeping, branched, fibrillose. B. _Gills grey._ IV. TEPHROPHANAE. _Brown or greyish._ * _Gills crowded, rather narrow._