Calflora, a 501c3 non-profit
Distribution by County   4406    
Ivesia longibracteata  Ertter
Castle crags ivesia,   Longbract mousetail
Ivesia longibracteata is a perennial herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).
Record Count by County

Shasta: 8 Siskiyou: 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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 02/22/2024).