|R. occidentalis in Anacortes, Washington|
Ranunculus occidentalis (western buttercup) is a species of buttercup found in the western United States and Canada. Its distribution extends from Alaska through British Columbia and Alberta to central California. The flower can be seen in open meadows, forests, and other generally flat areas up to an elevation of 2,200 metres (7,200 ft).
Aleut Indians may have used juice from the plant as a poison, its toxicity arising from the substance protoanemonin. Shasta Indians coincided blooming R. occidentalis with salmon runs in the summer. The seeds were used to make pinole, a staple food.
This plant is similar to, and sometimes difficult to distinguish from, the California buttercup (Ranunculus californicus).
|Wikimedia Commons has media related to Ranunculus occidentalis.|
- "Plants Database Entry ranunculus occidentalis". United States Department of Agriculture.
- "Jepson Manual Treatment for ranunculus occidentalis". University of California Berkeley Jepson Treaments. Retrieved 2009-06-05.
- Flora of North America
- Bank, Theodore (1953). Botanical and ethnobotanical studies in the Aleutian Islands - Health and Medical Lore ... Michigan Academy of Science, Arts and Letters. p. 428.
- Holt, Catharine (1946). Shasta Ethnography. University of California, Berkeley. p. 310.
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