Volvariella hypopithys or False death cap

Cap 5-10 cm across, hemispherical in young mushrooms, becoming convex-flat with age. Color pale yellow, lemon-citrine, creamy yellow, slightly darker in the center. Surface smooth, slightly slimy in wet weather. The cap often carries large whitish or grayish membranous patches — remnants of the universal veil (volva) that stuck to it as it grew. The cap margin is smooth.

Cap 2-3.5 cm, bell-shaped at first, then flattened with a small umbo in the center. White, with a matte, silky surface. Sometimes with fine radial fibers. The margin is thin and slightly torn in mature mushrooms.

Gilled hymenophore — gills white, free (not attached to the stem), moderately crowded. Spore print white.

Gilled hymenophore. Gills free (not attached to the stem), moderately spaced. White at first, turning brownish-pink with age from the color of the spores. Spore print pink or pinkish-brown — typical of the genus.

Stem 6-10 cm tall, 1-1.5 cm thick, cylindrical, with a pronounced bulbous base (like an onion bulb). Color white to yellowish. In the upper part — a white membranous ring. At the base — a volva forming a rim on the bulb (not a sac, as in the destroying angel).

Stem 3-5 cm tall, 2-4 mm thick, slender, cylindrical, white, smooth. No ring. At the base there's a dense white volva hugging the stem tightly, like a little sac.

Flesh white to pale yellow. When cut, it does not change color. Smell distinct, with a note of raw potato or radish — a diagnostic feature of the species.

The flesh is thin, white and delicate. It doesn't change color when cut. The texture is very fragile — the mushroom breaks at the slightest touch.

A distinct potato-and-radish smell, with notes of raw potato, radish or a damp cellar. It comes out when you rub the flesh between your fingers. The most important diagnostic feature of the species.

No distinct smell, faintly mushroomy. Indistinct taste. Don't taste it — its edibility is unknown.