Populus fremontii subsp. fremontii

Alamo or fremont cottonwood, Alamo Or Fremont Cottonwood

Family: Salicaceae · Type: tree · Native

Alamo or fremont cottonwood is a California native tree found in alluvial bottomlands and streamsides throughout California (except the Modoc Plateau) at elevations below 2,000 meters. Flowering from March to April, this tree produces yellow-green flowers with distinctive deltate leaves. Growing to 20 meters tall with a wide crown, it features yellow to gray twigs that become more grayish with age and have resinous winter buds. Its leaves have laterally compressed petioles measuring half to equal the blade length, with 3 to 7 centimeter blades that are often stained with milky resin and have coarsely scalloped edges. The tree's base leaves are roughly heart-shaped to flat-bottomed, with leaf tips that taper gradually.

Habitat: Scattered. Alluvial bottomland, streamsides

Bloom period: Mar-Apr

Elevation: < 2000 m

Bioregions: CA (exc MP)

California counties: Los Angeles, Kern, Inyo, San Diego, Ventura, San Bernardino, Tulare, Contra Costa, Monterey, San Luis Obispo, San Benito, Fresno, Orange, Lake, Riverside, Butte, Santa Clara, Yolo, Stanislaus, Sonoma, Santa Cruz, El Dorado, Solano, Nevada, Calaveras, Sacramento, Imperial, Tehama, Glenn, Mendocino, Santa Barbara, Alameda, Amador, Merced, Trinity, Sutter, Colusa, Mariposa, Napa, Mono, Siskiyou, Lassen, Madera, San Joaquin

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.