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Distribution by County   252    
Alnus rhombifolia  Nutt.
White alder
Alnus rhombifolia is a tree that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 44 Lassen: 2 Plumas: 33 Shasta: 65
Alpine: 1 Los Angeles: 324 Riverside: 91 Sierra: 16
Amador: 17 Madera: 35 Sacramento: 191 Siskiyou: 7
Butte: 96 Marin: 65 San Benito: 2 Solano: 106
Calaveras: 12 Mariposa: 38 San Bernardino: 124 Sonoma: 112
Colusa: 9 Mendocino: 38 San Diego: 112 Stanislaus: 27
Contra Costa: 45 Merced: 3 San Francisco: 3 Tehama: 95
El Dorado: 66 Mono: 1 San Joaquin: 22 Trinity: 52
Fresno: 88 Monterey: 80 San Luis Obispo: 27 Tulare: 114
Glenn: 14 Napa: 18 San Mateo: 45 Tuolumne: 24
Humboldt: 36 Nevada: 59 Santa Barbara: 57 Ventura: 62
Kern: 43 Orange: 90 Santa Clara: 84 Yolo: 28
Lake: 13 Placer: 42 Santa Cruz: 20 Yuba: 31

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: https://www.calflora.org/   (Accessed: 11/23/2024).