How to tell White dapperling from Lepiota helveola

Cap 4-10 cm across; hemispherical to convex when young, later flattening out with a small bump in the center. Color white to cream, sometimes with pale ochre or cream scales in the center; smooth and silky-white when young. The cap skin is finely fibrous or covered with small, flattened scales. The cap margin is thin, inrolled when young.

The cap is small: 2-5 cm across, hemispherical when young, later becoming convex to flattened with a small bump in the center. Cream or pale ochre, with characteristic pinkish-brown or ochre-brick scales, scattered irregularly or in concentric rings. The scales are denser in the center of the cap. The surface beneath the scales is smooth.

Gills. The gills are crowded, thin, free (not attached to the stem). White to cream in young mushrooms, creamy-pinkish with age (hence the Ukrainian name, which means "red-gilled"). The spore print is white to pale pink — an important diagnostic feature (in Agaricus it's blackish-brown).

Gills. The gills are crowded, thin, free (not attached to the stem). White to cream. The spore print is white — a critical feature for telling it apart from Agaricus (theirs is blackish-brown).

Stem 5-10 cm tall, 0.7-1.5 cm thick, cylindrical, slightly thickened toward the base. White to cream. On the stem there's a simple membranous ring, distinct in young mushrooms, may disappear with age. The surface is smooth.

Stem 3-6 cm tall, 0.3-0.7 cm thick, cylindrical, slender. Whitish in the upper part, and lower down with pinkish-brown tones. The ring is absent or present as a thin, indistinct band — practically invisible in mature mushrooms. The stem flesh is thin, hollow in old mushrooms.

Flesh of medium thickness, white, with a barely noticeable pink tint at the base of the stem. It doesn't change color when cut.

Flesh thin, white, with a pink tint at the base of the stem. It doesn't change color quickly when cut.

Faint and neutral, with no distinct notes. Don't taste it — its safety status is undetermined.

Faint and neutral, or with a note of raw dough. Nothing alarming. The taste is mild. Neither smell nor taste hints at deadly toxicity — the treachery of amatoxin mushrooms lies in the absence of any sensory warning.