Stropharia ambigua
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Stropharia ambigua, sometimes known as the questionable Stropharia, is a saprotrophic agaric mushroom, commonly fruiting in leaf litter and wood chips in the Pacific Northwest. Its edibility is debated.
Description
The cap is Script error: No such module "convert". broad, obtuse to convex, becoming flat or uplifted in age; it has a smooth surface, is slimy when moist, and yellowish.[1] The edge may have bits of white veil hanging from it.[2] The flesh is white, thick, and soft. The gills are pale gray and gradually darkens to purplish-gray or purplish-black.[1] The gills occasionally pull away from the stipe with age.[3]
The stipe is Script error: No such module "convert". long, 1–2 cm wide,[4] and is stuffed or hollow. It may have bits of white veil hanging from it and, less commonly, a brittle ring.[2] The veil is soft and white. The spore print is dark purplish to nearly black.[5] The species fruits in the spring and fall.[1] It does not have a volva.[3] The species has been said to taste like old leaves.[6]
Similar species
Within the genus, it can resemble Stropharia aeruginosa, S. coronilla,[4] S. riparia,[2] and S. semiglobata.[4] Leratiomyces percevalii is another potential lookalike.[5]
Distribution and habitat
Stropharia ambigua appears in late fall as a solitary to scattered mushroom or in groups on rich humus, usually under conifers. It can also be found with alder and other hardwoods in the Pacific Coast.[6] It has frequently been found in disturbed areas, such as where wood was handled.[1] The species will colonize outdoor mushroom beds after wood chips have been decomposed by a primary saprotroph.[7] It favors a cold and damp environment.[3]
Edibility
Alexander Hanchett Smith and Nancy S. Weber state that the species is not poisonous.[1] Contrarily, one source regards it as possibly poisonous.[8] Because of conflicting reports on its edibility, the authors David Arora, Orson K. Miller, Jr. and Hope Miller do not recommend eating the species.[3][9]
References
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