Arctostaphylos catalinae is a shrub that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
[Wikipedia] Limited Range: The plant is endemic to Santa Catalina Island, one of the southern Channel Islands of California.
The plant grows in maritime chaparral habitats, on the ridges of Catalina Island. (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: 03/28/2025).