Frangula californica is a species of flowering plant in the buckthorn family native to western North America. It is commonly known as California coffeeberry and California buckthorn.
Ceanothus integerrimus is a woody shrub in the family Rhamnaceae, native to the western United States, in Arizona, New Mexico, California, Oregon, and Washington. It grows in montane chaparral and woodlands regions, in hardwood forests, and in fir, spruce, and Ponderosa pine plant communities, being most abundant in the California chaparral and woodlands and Sierra Nevada.
Malosma is a plant genus which contains only a single species, Malosma laurina, with the common names laurel sumac and lentisco (Spanish). Malosma laurina is found along the Southern California and Baja California Peninsula coasts of the Pacific Ocean.
Eriodictyon capitatum, the Lompoc yerba santa, is a rare evergreen shrub in the borage family. It is endemic to western Santa Barbara County, in California.
Ceanothus foliosus is a species of flowering shrub known by the common name Wavyleaf ceanothus.
Ceanothus impressus, with the common name Santa Barbara ceanothus, is a species of flowering shrub. This Ceanothus is endemic to the Central Coast of California, where it can be found on coastal slopes and mesas. Other common names are blueblossom ('blueblos') and California lilac, although the plant is not a lilac (Syringa).
Ceanothus ophiochilus is a rare species of flowering shrub known by the common name Vail Lake ceanothus, native to Southern California. It was not described until 1991.
Ceanothus spinosus, with the common names greenbark and redheart, is a species of Ceanothus. It is native to southern California and northern Baja California, where it grows in the scrub and chaparral of the coastal mountain ranges.
Ceanothus confusus is a species of shrub in the buckthorn family Rhamnaceae known by the common name Rincon Ridge ceanothus. It is endemic to northern California where it grows in the coastal mountains north of the San Francisco Bay Area. Its habitats include coniferous forest, woodland, and chaparral. This is a low, spreading shrub often forming a short mat up to about 1.2 meters wide. The stem is gray-brown with new twigs having a reddish color and fuzzy texture. The evergreen leaves are oppositely arranged. Each is up to 2 centimeters long and oval in shape with 3 to 5 large teeth. The upper surface is shiny green and the underside is paler and feltlike in texture with hairs along the veins. The inflorescence is a small cluster of blue or purple flowers. The fruit is a horned capsule about half a centimeter wide.
Ceanothus cordulatus is a species of shrub in the buckthorn family Rhamnaceae known by the common names mountain whitethorn and whitethorn ceanothus. It is native to California and adjacent sections of Oregon, Nevada, and Baja California, where it grows on mountain ridges and other forested areas. This is a spreading shrub growing usually wider than tall and up to about 1.5 meters. The stems are gray, with the twigs yellow-green in color and fuzzy in texture when new. The evergreen leaves are alternately arranged and up to 3 centimeters long. Each is oval in shape with three ribs and generally not toothed. The leaves may be hairy or not. The inflorescence is panicle-shaped, up to about 4 centimeters long. The flowers are white to off-white with five sepals and five petals. The fruit is a rough, ridged capsule up to half a centimeter long. It has three valves inside, each containing a seed.
Ceanothus oliganthus is a species of shrub in the buckthorn family Rhamnaceae known by the common name hairy ceanothus, or hairy-leaf ceanothus.
Ceanothus pumilus is a species of shrub in the buckthorn family Rhamnaceae known by the common names dwarf ceanothus and Siskiyou mat. It is native to the mountains of southern Oregon and northern California, where it grows in habitat such as coniferous forest and chaparral, often on serpentine soils.
Ceanothus purpureus, with the common name Hollyleaf ceanothus, is a species of shrub in the buckthorn family Rhamnaceae. It is endemic to northern California, where it is known only from the Inner North Coast Ranges north of the Bay Area, mainly in Sonoma and Napa Counties. The largest remaining population of this shrub occurs on Mt. George near Napa, where it is protected in a botanical preserve.
Ceanothus roderickii is a rare species of shrub in the buckthorn family Rhamnaceae known by the common name Pine Hill ceanothus. It is endemic to western El Dorado County, California, where it grows in the chaparral and woodlands of the Sierra Nevada foothills, such as the Pine Hill Ecological Reserve. It is named after 20th century California flora explorer, botanist, and arboretum director Wayne Roderick.
Ceanothus sanguineus is a species of shrub in the buckthorn family Rhamnaceae known by the common name redstem ceanothus. It is native to western North America from British Columbia to Montana to far northern California; it is also known from Michigan. It grows in temperate coniferous forest habitat in forest openings amidst the conifers. This is an erect shrub approaching 3 meters in maximum height. Its stem is red to purple in color, its woody parts green and hairless when new. The deciduous leaves are alternately arranged and up to about 10 centimeters long. They are thin, light green, oval, and generally edged with glandular teeth. The undersides are sometimes hairy. The inflorescence is a cluster of white flowers up to about 12 centimeters long. The fruit is a three-lobed smooth capsule about 4 millimeters long. This shrub is an important food plant for wild ungulates such as the Rocky Mountain Elk, it is browsed eagerly by many types of livestock, and the seed is consumed by many types of animals.
Ceanothus sonomensis, with the common name Sonoma ceanothus, is a rare species of shrub in the buckthorn family Rhamnaceae. It is endemic to northern California.
Ceanothus tomentosus, with the common name woollyleaf ceanothus, is a species of shrub in the buckthorn family Rhamnaceae. It is native to several of the mountain ranges in California and Baja California.
Ceanothus velutinus, with the common names snowbrush ceanothus, red root, and tobacco brush, is a species of shrub in the family Rhamnaceae. It is native to western North America from British Columbia to California to Colorado, where it grows in several habitat types including coniferous forest, chaparral, and various types of woodland.
Ceanothus verrucosus is a species of shrub in the buckthorn family Rhamnaceae known by the common names wart-stem ceanothus, barranca brush, and white coast ceanothus. It is native to Baja California and San Diego County, where it grows in coastal chaparral and scrub. Most of the valuable coastal land that hosts this plant in the San Diego area has been claimed for development, but several populations still remain scattered around the region, such as one protected at Torrey Pines.
