Amanita pantherinoides, commonly known as the western pantherSiegel, Noah; Schwarz, Christian (September 1, 2024). Mushrooms of Cascadia: A Comprehensive Guide to Fungi of the Pacific Northwest. Humboldt County, CA: Backcountry Press. p. 52. . or western American false panther is a species of mushroom in the family Amanitaceae. It is poisonous, containing ibotenic acid and muscimol.
Taxonomy Amanita pantherinoides has long been thought to be the same as the species Amanita pantherina, which has similar morphology under certain environmental conditions and at certain stages of maturity, but it is now considered to be a distinct species. A. pantherina occurs in Europe and western Asia, while A. pantherinoides occurs in western North America. Another species with similar morphology, Amanita multisquamosa, occurs in eastern North America.
Description Amanita pantherinoides has a light brown cap that is about wide. The cap has white warts that sometimes wash off. The stipe is about tall and about wide. The mushroom has a ring and a volva.
Habitat and ecology Amanita pantherinoides is mycorrhizal and grows under conifers, especially Douglas fir. It is usually found in forests, but occasionally cities as well.
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