Calflora
Taxon  Report   253    
Alnus rubra  Bong.
Oregon alder,   Red alder
Alnus rubra, a dicot, is a tree or shrub that is native to California, and also found elsewhere in North America and beyond.
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

Bloom Period
Family: Betulaceae  
Genus: Alnus

Toxicity: DERMATITIS

Wetlands:
Arid West: Occurs usually in wetlands, occasionally in non wetlands
Mountains, Valleys and Coast: Equally likely to occur in wetlands and non wetlands

Communities: Closed-cone Pine Forest, Redwood Forest, Mixed Evergreen Forest, wetland-riparian

Name Status:
Accepted by JEF + PLANTS
Alternate Names:
PLANTSAlnus oregona var. pinnatisecta
JEF + PLANTSAlnus oregona
More information about  Alnus rubra

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 08/07/2022).