Amanita mushrooms explained: how to recognise the world's most dangerous genus

Why every forager learns the Amanita family first

Roughly 90% of fatal mushroom poisonings worldwide are caused by species in the genus Amanita, above all the death cap and destroying angel. Because young Amanitas emerge from a round white universal veil ("egg"), they can be mistaken for puffballs or field mushrooms by people who cut the stem above ground instead of digging up the base.

The four classic Amanita traits

1. A sac (volva) or warty bulb at the base: remnants of the egg-like universal veil that enclosed the young mushroom. It is often buried in leaf litter or soil, which is why you must always dig up the entire base when identifying a mushroom.
2. White or pale cream gills: unlike true Agaricus field mushrooms (whose gills turn pink and then dark chocolate-brown), Amanita gills remain white or pale cream.
3. A skirt-like ring (annulus) on the stem: left behind by the partial veil that covered the young gills. Note that rain or slugs can tear this ring away.
4. Warts or patches on the cap: seen clearly on the fly agaric, panther cap and blusher, though heavy rain can wash a cap completely clean.

Amanita species in our guide

• Death cap (Amanita phalloides) — Deadly. Olive-green to yellowish smooth cap, white gills, skirt ring and a sac-like volva at the base.
• Destroying angel (Amanita virosa) — Deadly. Pure white cap, gills, ring and basal sac.
• Panther cap (Amanita pantherina) — Poisonous. Brown cap with white warts, smooth ring, collared basal bulb, unchanging white flesh.
• Fly agaric (Amanita muscaria) — Poisonous. Scarlet-red cap with white warts.
• The blusher (Amanita rubescens) — Edible only with caution (toxic raw; easily confused with the panther cap). See Blusher vs Panther cap.