Persoonia 5(4): 419. 1969
Common Name: none
Not uncommon under conifers in northern coastal California. Also sometimes found in the Sierra Nevada foothills.
Deadly poisonous!!! Symptoms include nausea and vomiting beginning 2-12 hours after ingestion and progresses to kidney failure in 2-6 days.
Amanita smithiana could be confused with other members of Amanita section Lepidella: Amanita cokeri, Amanita magniverrucata, or Amanita silvicola. Older speciemens could also be confused, with disasterous results, with the edible Tricholoma magnivelare.
Bas, C. (1969). Morphology and Subdivision of Amanita and a Mongraph of its Section Lepidella. Persoonia 5: 285-579. (Protologue)
Thiers, Harry D. (1982). The Agaricales (Gilled Fungi) of California. 1. Amanitaceae. Mad River Press: Eureka, CA. 53 p.
Tulloss, R. E. and J. E. Lindgren. (1992). Amanita smithiana—taxonomy, distribution, and poisonings. Mycotaxon 45: 373-387.
West, P., Lindgren, J. & Horowitz, B. (2009). Amanita smithiana mushroom ingestion: A case of delayed renal failure and literature review. Journal of Medical Toxicology 5(1): 32-38.