Amanita pantherinoides
Amanita pantherinoides, commonly known as the western panther or western American false panther, is a poisonous mushroom in the Amanita family. It contains ibotenic acid and muscimol, chemicals that can cause illness or psychoactive effects.
It was long thought to be the same as Amanita pantherina, but today it is recognized as a separate species. Amanita pantherina is found in Europe and western Asia, while Amanita pantherinoides is found in western North America. A look-alike in eastern North America is Amanita multisquamosa.
Description: The cap is light brown and 4–10 cm across, with white warts that may wash off. The gills are adnexed (attached to the stem). The stem is 5–12 cm tall and 1–2 cm wide and has a ring and a volva at the base. The spore print is white. The cap can be convex or flat.
Ecology: It forms a mycorrhizal relationship with conifers, especially Douglas fir. It is usually found in forests, but can occasionally appear in cities.
Important note: Do not eat this mushroom; it contains toxins and can have psychoactive effects.
This page was last edited on 3 February 2026, at 17:42 (CET).