Stropharia ambigua

The cap is {{convert|3 to 15|cm|abbr=on|frac=8}} broad, obtuse to convex, becoming flat or uplifted in age; it has a smooth surface, is slimy when moist, and yellowish. The edge may have bits of white veil hanging from it. The flesh is white, thick, and soft. The gills are pale gray and gradually darkens to purplish-gray or purplish-black. The gills occasionally pull away from the stipe with age. The stipe is {{convert|6 to 18|cm|abbr=on|frac=8}} long, 1–2 cm wide{{Cite book|last=Davis|first=R. Michael|url=https://www.worldcat.org/oclc/797915861|title=Field Guide to Mushrooms of Western North America|last2=Sommer|first2=Robert|last3=Menge|first3=John A.|publisher=University of California Press|year=2012|isbn=978-0-520-95360-4|location=Berkeley|pages=216-217|oclc=797915861}} and is stuffed or hollow. It may have bits of white veil hanging from it and, less commonly, a brittle ring.{{cite book|last1=Trudell|first1=Steve|url=https://books.google.com/books?id=WevHvt6Tr8kC|title=Mushrooms of the Pacific Northwest|last2=Ammirati|first2=Joe|publisher=Timber Press|year=2009|isbn=978-0-88192-935-5|series=Timber Press Field Guides|location=Portland, OR|pages=210-211}} The veil is soft and white. The spore print is dark purplish to nearly black.{{Cite book |last=Audubon |title=Mushrooms of North America |publisher=Knopf |year=2023 |isbn=978-0-593-31998-7 |pages=686}} The species fruits in the spring and fall. It does not have a volva. The species has been said to taste like old leaves.

Within the genus, it can resemble Stropharia aeruginosa, S. coronilla, S. riparia, and S. semiglobata. Leratiomyces percevalii is another potential lookalike.

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.{{cite book | last = Arora | first = David | title = Mushrooms Demystified: A Comprehensive Guide to the Fleshy Fungi | publisher = Ten Speed Press | date = 1986 | page = [https://archive.org/details/mushroomsdemysti00aror_0/page/378 378] | url = https://archive.org/details/mushroomsdemysti00aror_0 | url-access = registration | isbn = 978-0-89815-169-5 }} It has frequently been found in disturbed areas, such as where wood was handled.{{cite book|last=Smith|first=Alexander Hanchett|url=https://books.google.com/books?id=TYI4f6fqrfkC&pg=PA225|title=The Mushroom Hunter's Field Guide|last2=Weber|first2=Nancy S.|date=1980|publisher=University of Michigan Press|isbn=978-0-472-85610-7|pages=225-226}} The species will colonize outdoor mushroom beds after wood chips have been decomposed by a primary saprotroph.{{cite book | last = Stamets | first = Paul | title = Growing gourmet and medicinal mushrooms | publisher = Ten Speed Press | date = 2000 | page = 12 | url = https://books.google.com/books?id=y1fnacRg1AYC&pg=PA12 | isbn = 978-1-58008-175-7}} It favors a cold and damp environment.{{cite book | last = Arora | first = David | title = All That the Rain Promises and More: A Hip Pocket Guide to Western Mushrooms | publisher = Ten Speed Press | date = 1991 | pages = 126 | url = https://books.google.com/books?id=87ct90d4B9gC&pg=PA126 | isbn = 978-0-89815-388-0 }}

Alexander Hanchett Smith and Nancy S. Weber state that the species is not poisonous. Contrarily, one source regards it as possibly poisonous.{{cite book |last=Multiple authors |first=Fuller Thomas C.; McClintock, Elizabeth May |url=https://books.google.com/books?id=GDpCNKm7xTQC&pg=PA53 |title=Poisonous Plants of California |date=1986 |publisher=University of California Press |isbn=978-0-520-05569-8 |page=53}} Because of conflicting reports on its edibility, the authors David Arora, Orson K. Miller, Jr. and Hope Miller do not recommend eating the species.{{cite book |last=K. Miller |first=Orson |url=https://books.google.com/books?id=zjvXkLpqsEgC&pg=PA256 |title=North American Mushrooms: A Field Guide to Edible and Inedible Fungi |author2=Miller, Hope |date=2006 |publisher=Globe Pequot |isbn=978-0-7627-3109-1 |page=256}}

{{Reflist}}

• {{Commons-inline}}
• [http://www.mushroomexpert.com/stropharia_ambigua.html Stropharia ambigua]

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Category:Strophariaceae

Category:Fungi described in 1898

Category:Fungi of North America

Category:Taxa named by Charles Horton Peck

Category:Fungus species