Mycelium forming long black strands. A destructive parasite. =denigrata=, Fr. P. 3-5 cm. obtuse, dark brown, rather viscid, spotted with droplike depressions, and with elevated warts, margin even; g. rather decurrent; s. 4-5 cm. solid tinged brown, ring disappearing; sp. ----. [=morio=, Fr. P. campan.-exp. irreg. cracked, viscid, greyish brown then rufescent; g. adnate; s. solid, fibrous, ring narrow. [=Viviani=, Fr. P. convex, glabrous, dark bay then whitish; g. adnate, pale fawn; s. elongated, white, ring narrow. [=griseofusca=, D. C. P. convex, even, glabrous, brownish grey, discoid; g. decur.; s. equal, glabrous, ring persistent. [=pleurotoides=, Fr. P. subexcentric, ring toothed; s. whitish with a flesh-coloured tint. =citri=, Inz. P. 2-3 cm. soon plane, subumb., even, yellow; g. adnate; s. 5-7 cm., slender, ring spreading; sp. subgl. 5 x 4. =subcava=, Schum. P. 3-4 cm. white, umbo brownish, striate to middle; g. decurrent; s. equal, hollow upwards, 4-5 cm., even up to torn ring, punctate above, white; sp. ----. Differs from _A. constricta_ by longer thinner stem, and striate pileus. =haematites=, B. and Br. P. 2-3 cm. obtuse, liver-coloured; g. adnato-decurrent; s. 3-5 cm. coloured like pileus up to ring, whitish above; sp. 8 x 5. *** _Gills adnate without a sinus._ [=laqueata=, Fr. White. P. 3-4 cm. hemispherical, obtuse, viscid when moist, smooth; g. adnate; s. 5-7 cm. solid, squamulose or fibrillose below the ring, base tinged brown; sp. ----. =mucida=, Schrad. P. 4-8 cm. soon expanded, white or grey, rugulose, glutinous; g. striately decurrent; s. 5-12 cm. base thickened, ring apical, striate, tumid; sp. 15-16 x 8-9. =Jasonis=, Cke. and Mass. P. 3-5 cm., camp. then expanded, umb., yellow, disc tawny, papillate; g. adnate; s. 5-7 cm. coloured like pileus, squamulose up to torn ring; sp. 8 x 5. [=fracida=, Fr. Smell rancid. P. convex, obtuse, even, spotted, brownish-olive; g. becoming free, white; s. base narrowed, squamulose, smooth above the spreading torn ring. [=pinetorum=, Gill. P. exp. umb. granular, pale or yellowish white, covered with reddish squamules; g. sinuato-decur., pallid; s. colour of p., squamulose up to spreading ring which is also squamulose outside. TRICHOLOMA, Fr. A. _Pileus viscid, scaly, or villose._ I. LIMACINA. _Pileus viscid when moist, innately fibrillose or squamulose, but not broken up._ * _Gills not changing colour, not becoming rufescent._ =equestre=, Linn. P. 7-12 cm. exp. obtuse, viscid, squamulose, yellow or tinged green; g. sulphur yellow; s. 4-7 cm. yellow; sp. 7-8 x 5. =coryphaeum=, Fr. P. 8-15 cm. soon exp. viscid, yellowish with darker squamules; g. white, edge yellow; s. solid, obclavate; sp. subglobose, 5-6. _T. equestre_ differs in having gills entirely yellow, and _T. sejunctum_ in its pure white gills. =sejunctum=, Sow. P. 7-10 cm. expanded, yellow with brown streaks, viscid; g. pure white; s. 8-12 cm. white, apex squamulose; sp. subgl. 5-6.