_Taste mild_, often astringent. The most changeable of all species, especially in the color of the pileus which is typically red, but at the same time inclining to azure-blue, bay-brown, olivaceous, etc. Sometimes the gills are sterile and remain white. _Fries._ =Spores= ellipsoid-spheroid or spheroid echinulate, globose, rough, 8–9µ _C.B.P._; 9–10µ diameter, pale ochraceous. _Massee._ It is difficult to separate R. integra from R. alutacea. The spores usually show upon the gills as pale dull yellow powder. It is of equal excellence. =R. decolo´rans= Fr.—_de_ and _coloro_, to color. =Pileus= 3–5 in. broad, color various, at first orange-red, then light yellow and becoming pale, fleshy, spherical then expanded and depressed, remarkably regular, viscid when moist, thin and at length striate at the margin. =Flesh= _white, but becoming somewhat cinereous_ when broken, and more or less _variegated with black spots_ when old. =Stem= _elongated_, 3–5 in., cylindrical, solid, but spongy within, often _wrinkled-striate, white then becoming cinereous_ especially within. =Gills= adnexed, often in pairs, thin, crowded, fragile, white then yellowish. _Taste mild._ Colors changeable according to a fixed rule, but not variable. The gills are not ochraceous-pulverulent as in R. integra, nor shining and pure yellow as in R. aurata, etc. _Fries._ =Spores= yellow, 8.3µ _Morgan_. New York, _Peck_, 23d Rep. Angora, West Philadelphia, Pa., 1897, in mixed woods. August to October. _McIlvaine._ Esculent and of good quality. _Morgan._ Meals of it make one regret its scarcity. =R. basifurca´ta= Pk.—forked near stem. =Pileus= 2–3 in. broad, firm, convex, umbilicate, becoming somewhat funnel form, glabrous, slightly viscid when moist, the thin pellicle scarcely separable except on the margin, dingy-white, sometimes tinged with yellow or reddish-yellow, the margin nearly even. =Lamellæ= rather close, narrowed toward the base, adnate or slightly emarginate, many of them forked near the base, a few short ones intermingled, white becoming yellowish. =Stem= 8–12 lines long, 5–6 lines thick, firm, solid, becoming spongy within, white. =Spores= elliptical, pale yellow, uninucleate or shining, 9×6.5µ. =Flesh= white, taste mild, then bitterish. Dry hard ground in paths and wood roads. Canoga, N.Y. July. This species closely resembles pale forms of R. furcata, from which it is separated by the absence of any silky micor and by the yellowish color and elliptical shape of the spores and by the yellowish hue of the lamellæ. _Peck_, 38th Rep. N.Y. State Bot. Mt. Gretna, Pa., September, 1898, to frost. Gravelly ground. Solitary. Gills adnate. Identified as his species by Professor Peck. The slight bitterish taste disappears in cooking. It is edible and of fair quality.