Russula integra or Violet webcap

Cap 5-15 cm across, hemispherical with an inrolled margin in young mushrooms, later becoming convex-flat with a low umbo. Color deep violet, inky purple, almost black in the center. Surface velvety-scaly, with fine violet-inky scales — a hallmark of the species. In damp weather it looks matte and velvety.

Cap 6-15 cm across, when young hemispherical, with age becoming flat and spread out with a slightly depressed center. The skin is smooth, slimy in wet weather, dry and matte in dry weather, peels easily over 2/3 of the cap toward the center. Color: dark purple, chestnut-purple, wine-red, with a darker center and lighter margin. In mature specimens the margin has fine radial grooves resembling coarse ribbing.

Gills — attached to the stem, moderately spaced, deep violet, darkening with age to purple-black, then to rusty brown as the spore powder ripens. Spore print rusty brown. In young mushrooms the gills are covered by a cobweb-like partial veil (cortina) with a purple tint.

Gilled hymenophore — the gills are attached or free from the stem, moderately spaced, fleshy, brittle. Color when young: whitish, with age turning ochre-cream to yellowish from the ripe yellow-ochre spores. Spore print yellow-ochre — a diagnostic feature (distinguishes it from the rusty brown of webcaps).

Stem 8-12 cm tall, 1.5-2.5 cm thick, cylindrical, thick and fleshy, with a bulbous swelling at the base. Color deep violet, matching the cap, paler toward the base. The surface has fine violet fibers. Remnants of the cobwebby cortina on the stem — purple in young mushrooms, covered in rusty-brown spores in old ones.

Stem 4-8 cm tall, 1.5-3 cm thick, firm, fleshy, cylindrical, hollow inside in old specimens. Color: white to creamy white, with a faint yellowish tint when old, browning toward the base. Surface smooth with fine lengthwise wrinkles. No ring.

Flesh firm, violet in young mushrooms, turning gray-violet to brownish with age. When cut, it does not change color. Smell faint, mushroomy; in some populations with a hint of cedar.

Flesh firm, brittle, white; where cut, it slowly turns yellow (a reaction typical of the genus Russula). Smell pleasantly mushroomy, with a fruity note in mature specimens, taste mild, sweetish and nutty, with no bitterness or acridity — a diagnostic feature.

Faint, pleasant and mushroomy, with a subtle resinous or cedar note in some populations.

Pleasantly fruity-mushroomy, with no sharp notes.