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Taxon  Report  
Rhamnus pirifolia  Greene
Island redberry
Rhamnus pirifolia is a tree or shrub that is native to California, and also found elsewhere in western North America.
California Rare Plant Rank: 4.2 (limited distribution).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~242 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Genus: Rhamnus
Family: Rhamnaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEFRhamnus catalinae
JEF + PLANTSRhamnus crocea ssp. pirifolia
JEFRhamnus crocea var. insularis
JEF + PLANTSRhamnus crocea var. pirifolia
PLANTSRhamnus insularis
More …
Information about  Rhamnus pirifolia from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (RHPI)

Photos on Calflora

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Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
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: 05/22/2025).