Calflora
Taxon  Report   9664    
Alnus incana  (L.) Moench
Gray alder
Alnus incana, 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
Subspecies and Varieties:

Toxicity: DERMATITIS Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Communities: Yellow Pine Forest, Red Fir Forest, wetland-riparian

Name Status:
Accepted by PLANTS
More information about  Alnus incana
Nursery availability from CNPLX
This plant is available commercially.
USDA PLANTS Profile (ALIN2)

BONAP Distribution Map


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).