Thaxterogaster causticus
| Thaxterogaster causticus | |
|---|---|
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Cortinariaceae |
| Genus: | Thaxterogaster |
| Species: | T. causticus
|
| Binomial name | |
| Thaxterogaster causticus (Fr.) Niskanen & Liimat.
| |
| Synonyms | |
|
Cortinarius causticus Fr. | |
| Thaxterogaster causticus | |
|---|---|
| Mycological characteristics | |
| Gills on hymenium | |
| Cap is conical or umbonate | |
| Hymenium is adnexed | |
| Stipe has a cortina | |
| Spore print is reddish-brown | |
| Ecology is mycorrhizal | |
| Edibility is unknown | |
Thaxterogaster causticus, formerly known as Cortinarius causticus[1] and commonly known as the caustic webcap,[2] is a species of mushroom in the family Cortinariaceae.
Description
The orange,[2] hygrophanous[3] cap of Thaxterogaster causticus is about 1.5-4.5 centimeters in diameter. It starts out conical and usually becomes umbonate in age.[2] The gills start out creamy or white-colored, before becoming brown as the mushroom gets older.[4] They are adnexed and often notched.[2] The stipe is about 3.5-7 centimeters long and 3-6 centimeters wide. It is white and bruises yellow.[4] The spore print is rusty brown.[2] Both the cap and stipe of this mushroom are slimy.[3] There are several similar species, including T. vibratilis, which is found in Europe.[2]
Habitat and ecology
Thaxterogaster causticus grows under conifers, such as pine,[3] hemlock, and fir.[2] It is found in coniferous forests[3] in the Pacific Northwest.[2]
References
- ^ "Index Fungorum - Names Record". www.indexfungorum.org. Retrieved 2025-11-12.
- ^ a b c d e f g h 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. 210. ISBN 978-1-941624-19-7.
- ^ a b c d Trudell, Steve (October 25, 2022) [January 1, 2009]. Mushrooms of the Pacific Northwest (Revised ed.). Portland, OR: Timber Press. pp. 182–184. ISBN 978-1-64326-086-0.
- ^ a b Adams, Shannon (January 19, 2021). "Cortinarius causticus". North American Cortinarius Collections. Archived from the original on June 6, 2023. Retrieved 2025-11-11.