How to tell Paddy straw mushroom from Death cap

The death cap's cap is 5–15 cm across. In young mushrooms it is hemispherical, later becoming flat and spread out.

The color varies from olive green and yellowish green to grayish and almost white — which is what makes identification tricky. The surface is smooth, slightly slimy in wet weather, with a characteristic radial pattern of darker fibers spreading from the center. The cap margin is even, without striations.

Cap 5-12 cm across; when young it is completely wrapped in a whitish volva membrane (like an egg); with age it breaks free and becomes egg-shaped at first, then bell-shaped to convex, and flat and spread out in old mushrooms. The cap skin is smooth with fine radial fibers. The color is gray-brown, grayish-black in the center, paler toward the edge. The margin is even, with fine radial grooves in mature mushrooms.

The hymenophore is lamellate. The gills are crowded, thin and free — not attached to the stem. In both young and mature mushrooms they stay pure white — this is a critical diagnostic feature.

Not a hint of pink, cream or ochre, as in true Agaricus mushrooms. The gap between the gills and the stem is clearly defined. The veil is white and membranous, completely covering the hymenophore in young specimens.

Gilled hymenophore: the gills are free from the stem (not attached!), crowded, thin. In young mushrooms they are whitish, and with age they turn pink to pinkish-brown, a diagnostic feature. The spore print is pink, and that is exactly what sets it apart from the white spore print of amanitas.

The stem is slender, 7–15 cm tall and 1–2 cm thick. Cylindrical, widening at the base into a characteristic club-shaped bulb wrapped in a membranous sack-like volva — the main diagnostic feature.

The color is whitish green, often with a snakeskin pattern of faint bands. In the upper third there's a well-developed, hanging white ring with remnants of the veil. The surface below the ring is faintly scaly.

Stem 5-15 cm tall, 1-2 cm thick, firm, cylindrical, thickening toward the base. The color is white to cream, the surface smooth with fine lengthwise fibers. At the base there is a distinct SAC-LIKE VOLVA (a remnant of the universal veil) that stays for the mushroom's whole life. No ring.

The flesh is white and doesn't change color when cut — and that's the treacherous part: none of the safety signs foragers are used to relying on work here. The flesh is thin and brittle in the cap, fleshy at the base of the stem.

It doesn't change color on contact with air, neither after a minute nor after an hour. No "lovely white flesh" should reassure you — it's precisely in the white flesh of the death cap that the concentration of amanitins is highest.

Flesh firm, tender, white to grayish-cream; it doesn't change color when cut. The smell is pleasantly mushroomy with a hint of freshly ground flour, the taste mild, delicate, pleasantly mushroomy.

The smell of a fresh mushroom is faint and hard to notice; in young specimens it's almost absent. Mature ones develop a slight sickly-sweet note, like wilted honey or stale dough.

This aroma isn't distinct enough to warn an inexperienced forager. Like other poisonous amanitas (the fly agaric, the panther cap), the death cap has only a faint, indistinct smell that gives no warning — yet another treacherous trait. A stronger odor appears only in rotting specimens.

Pleasantly mushroomy with a hint of flour, neutral and slightly sweet.