Calflora, a 501c3 non-profit
Distribution by County   2675    
Delphinium trolliifolium  A. Gray
Columbian larkspur,   Cow poison
Delphinium trolliifolium is a perennial herb that is native to California, and endemic (limited) to California.
Record Count by County

Del Norte: 3 Marin: 1 Trinity: 4
Humboldt: 34 Mendocino: 1

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 04/13/2024).