Calflora, a 501c3 non-profit
Distribution by County   2632    
Delphinium californicum  Torr. & A. Gray  ssp. interius  (Eastw.) Ewan
California larkspur,   Coastal larkspur,   Hospital canyon larkspur
Delphinium californicum ssp. interius is a perennial herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
Record Count by County

Alameda: 15 Merced: 5 San Benito: 64 Santa Clara: 9
Contra Costa: 10 Monterey: 2 San Joaquin: 5 Stanislaus: 2

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/16/2026).