Green brittlegill 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 5-10 cm across, when young convex with an inrolled margin, with age becoming flattened with a slightly depressed center. The cap skin is smooth, slimy in wet weather, dry and matte in dry weather, peels easily 2/3 of the way to the center. Color: gray-green, grass-green, olive-green, deeper toward dark green at the center, paler toward the margin and fading to grayish. In mature specimens the margin has fine radial grooves.

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

Gilled hymenophore — the gills are attached or free from the stem, moderately crowded, thin, brittle. Color: white at first, cream with a pale ochre tinge with age. Spore print creamy white to pale ochre.

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 4-8 cm tall, 1-2 cm thick, firm, cylindrical, hollow inside in old specimens. Color: white to creamy white, without noticeable spots. Surface smooth with fine lengthwise wrinkles. No ring, no volva — a key distinguishing feature from the death cap.

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.

Flesh firm, brittle, white, when cut does not change color or slowly turns yellow. Smell faint, pleasant, fruity-mushroomy, taste mild, with no bitterness or acridity (tongue test).

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.

Faint, pleasant, fruity-mushroomy, nothing sharp.