Thaxterogaster occidentalis
| Thaxterogaster occidentalis | |
|---|---|
| In Little Skookum, Mason Co., Washington, US, under mature western red cedar and vine maple | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Cortinariaceae |
| Genus: | Thaxterogaster |
| Species: | T. occidentalis
|
| Binomial name | |
| Thaxterogaster occidentalis A.H.Sm. Niskanen & Liimat. (2022)
| |
| Synonyms[1] | |
| |
Thaxterogaster occidentalis, commonly known as the western purple-staining webcap,[2] The gills are adnexed to notched.[2] is a species of fungus in the family Cortinariaceae.[3]
Taxonomy
It was described in 1939 by the American mycologist Alexander H. Smith who classified it as Cortinarius occidentalis.[3]
In 2022 the species was transferred from Cortinarius and reclassified as Thaxterogaster occidentalis based on genomic data.[4]
Description
The cap of Thaxterogaster occidentalis is about 3-5.6 centimeters in diameter and purple in color. It is slimy,[5] and starts out round or convex. It expands in age.[2] The gills are purplish in color and adnate.[2] The stipe is about 3.2-5.5 centimeters long and 0.9-1.1 centimeters wide at the top. It is wider at the base.[5] A cortina is present, and the spore print is rusty brown. The inside of the mushroom is purple and stains darker purple.[2]
Habitat and distribution
| Thaxterogaster occidentalis | |
|---|---|
| Mycological characteristics | |
| Gills on hymenium | |
| Cap is convex | |
| Hymenium is adnate | |
| Stipe has a cortina | |
| Spore print is reddish-brown | |
| Ecology is mycorrhizal | |
| Edibility is unknown | |
Thaxterogaster occidentalis is native to the Northern Hemisphere.
References
- ^ "Cortinarius occidentalis A.H. Sm". Index Fungorum. CAB International. Retrieved 9 September 2015.
- ^ a b c d e Siegel, Noah; Schwarz, Christian (September 1, 2024). Mushrooms of Cascadia: A Comprehensive Guide to Fungi of the Pacific Northwest. Humboldt County, CA: Backcountry Press. p. 200. ISBN 9781941624197.
- ^ a b "Species Fungorum - Thaxterogaster occidentalis (A.H. Sm.) Niskanen & Liimat". www.speciesfungorum.org. Retrieved 2023-01-14.
- ^ Liimatainen, Kare; Kim, Jan T.; Pokorny, Lisa; Kirk, Paul M.; Dentinger, Bryn; Niskanen, Tuula (2022-01-01). "Taming the beast: a revised classification of Cortinariaceae based on genomic data". Fungal Diversity. 112 (1): 89–170. doi:10.1007/s13225-022-00499-9. hdl:2299/25409. ISSN 1878-9129. S2CID 247098340.
- ^ a b Adams, Shannon. "Cortinarius occidentalis (SDA 368)". North American Cortinarius Collections. Archived from the original on June 6, 2023. Retrieved 2025-11-09.