Draft:Amanita xylinivolva
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Last edited by Jeffsousa (talk | contribs) 47 days ago. (Update) |
| Amanita xylinivolva | |
|---|---|
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| Photograph of Amanita xylinivolva, a species of mushroom in the family Amanitaceae, featuring its distinctive collared volva and cap. | |
Scientific classification 
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| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Amanitaceae |
| Genus: | Amanita |
| Species: | A. xylinivolva
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| Binomial name | |
| Amanita xylinivolva Tulloss, Ovrebo & Halling
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Amanita xylinivolva is a species of fungus in the family Amanitaceae originally described in Andean Colombia by Tulloss, Ovrebo, and Halling in 1992.[1]
Etymology
[edit]The species name xylinivolva derives from the Greek xylinus (meaning "cottony" or "pertaining to cotton") and volva, referring to the distinctive cottony, submembranous material of the universal veil.
Description
[edit]Amanita xylinivolva is a small to medium-sized mushroom with a yellow to yellowish cream or buff-colored cap. The margin of the cap exhibits sulcate to tuberculate-sulcate striations. Fragments of the cottony, pale universal veil may be present on the cap surface or at the junction of the stipe and its swollen bulb. The species was previously collected in 1978 by Guzmán and Carela, who initially identified it as a member of the Amanita gemmata group. It can be distinguished from A. gemmata by its predominantly subglobose spores.[2]
Habitat and distribution
[edit]Amanita xylinivolva was originally described from specimens collected in Andean Colombia, where it was found in association with Quercus humboldtii and Weinmannia tomentosa.[3] Additional observations have been reported from Guatemala, although the full range of its distribution remains to be clarified.
Toxicity
[edit]Biochemical analysis of Colombian specimens showed that Amanita xylinivolva contains the potent toxin α-amanitin, with concentrations ranging from approximately 50 to 6 000 ppm, detected in both caps and stipes.[4] It is recorded in fungal databases as being used as a poison.[5] Consumption of α-amanitin–containing mushrooms can lead to **severe liver and renal failure**, sometimes fatal.
References
[edit]- ^ Tulloss, Rodham E.; Ovrebo, Clark L.; Halling, Roy E. (13 January 1992). Studies on Amanita (Amanitaceae) from Andean Colombia. Memoirs of the New York Botanical Garden. Vol. 66. The New York Botanical Garden. ISSN 0071-5794.
- ^ Tulloss, Rodham E.; Ovrebo, Clark L.; Halling, Roy E. (13 January 1992). Studies on Amanita (Amanitaceae) from Andean Colombia. Memoirs of the New York Botanical Garden. Vol. 66. The New York Botanical Garden. ISSN 0071-5794.
- ^ Tulloss, Rodham E.; Ovrebo, Clark L.; Halling, Roy E. (13 January 1992). Studies on Amanita (Amanitaceae) from Andean Colombia. Memoirs of the New York Botanical Garden. Vol. 66. The New York Botanical Garden. ISSN 0071-5794.
- ^ Vargas, N.; Bernal, A.; Sarria, V.; Franco‑Molano, A.; Restrepo, S. (2011). "Amatoxin and phallotoxin composition in species of the genus Amanita in Colombia: a taxonomic perspective". Toxicon. 58 (6–7): 583–590. doi:10.1016/j.toxicon.2011.09.005.
- ^ "Amanita xylinivolva Tulloss, Ovrebo & Halling – general information". ColFungi. Retrieved 20 June 2025.