=C. purpuras´cens= Fr.—gills becoming purple when bruised. =Pileus= 4–5 in. across, fleshy, disk compact, obtuse, wavy, variable, covered with a dense layer of gluten, but opaque when dry, bay or reddish then tawny-olivaceous, spotted; often depressed round the margin, which is at first incurved then wavy, marked with a raised brown line. =Flesh= entirely clear blue. =Gills= broadly emarginate, 3 lines and more broad, crowded, bluish-tan, then cinnamon, violet-purple when bruised. =Stem= about 3 in. long, ⅔ in. and more thick, solid, bulbous, everywhere fibrillose, intensely pallid clear blue, very compact, juicy, becoming purplish-blue when touched, bulb submarginate. =Spores= elliptical, 10–12×5–6µ _Fries_. Var. _subpurpuras´cens_. Massachusetts. _Frost._ Plentiful in West Virginia mountains in mixed woods, 1882. On South Valley Hill, near Downington, Pa., October, 1887. Haddonfield, N.J., 1892. In woods. September to frost. _McIlvaine._ Both stems and caps are juicy when young and of agreeable flavor. It is among the best edible species of Cortinarius. *** _Gills brownish-white, then ferruginous._ =C. turbina´tus= Fr.—_turbo_, a top. =Pileus= _unicolorous_, dingy-yellow or green, _becoming pale_, hygrophanous, opaque when dry, fleshy, convex then flattened, obtuse, at length depressed, orbicular, even, _smooth_, viscid. =Flesh= soft, _white_. =Stem= commonly curt, 2 in., but varying elongated, yellowish, springing from a globoso-depressed distinctly marginate bulb, otherwise equal, cylindrical, _stuffed then hollow_. =Gills= attenuato-adnate, thin, crowded, broad, _quite entire_, at first pallid light-yellowish, at length somewhat ferruginous. The typical form is _regular_, distinct from its allies in the _hygrophanous pileus, in the gills being isabelline-ferruginous and quite entire, and in being without any dark-purple or purple color_. Easily distinguished by its turbinate bulb. _Fries._ In woods. Uncommon. _Stevenson._ =Spores= rough, 14–16×7µ; rough, _Cooke_. =Cap= 2–4 in. across. =Stem= commonly about 2 in. long, sometimes longer. _Massee._ North Carolina, _Schweinitz_; Pennsylvania, _Schweinitz_; Massachusetts, _Frost_; Minnesota; Nova Scotia. Edible. _Cooke._ MYXA´CIUM. (_Gr_—mucus.) (Plate LXXXIII.) [Illustration: CORTINARIUS COLLINITUS. About natural size. ] =C. collin´itus= Fr.—_collino_, to besmear. =Pileus= convex, obtuse, glabrous, glutinous when moist, shining when dry. =Gills= rather broad, dingy-white or grayish when young. =Stem= cylindrical, solid, viscid or glutinous when moist, transversely cracking when dry, whitish or paler than the pileus. =Spores= subelliptical, 13–15µ.