[Wikipedia] Toxicity, Limited Range: Toxicoscordion exaltatum the giant deathcamas, is a North American flowering plant in the genus Toxicoscordion, reputed to be deadly poisonous.[2] It is native to California, Oregon, and Nevada,[3][4] where it can be found in the Sierra Nevada foothills. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/30/2025).