| Ceanothus papillosus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rhamnaceae |
| Genus: | Ceanothus |
| Species: | C. papillosus |
| Binomial name | |
| Ceanothus papillosus | |
Ceanothus papillosus, the wartleaf ceanothus, is a species of plant in the genus Ceanothus . It is endemic to California, where it grows in open habitat on the slopes of the coastal mountain ranges, such as woodland and chaparral.
The evergreen leaves are alternately arranged, often in crowded clusters, each oblong to long-rectangular in shape and covered in glandular bumps. The edges are generally turned under and lined with glandular hairs. The inflorescence is a cluster of bright blue flowers. The fruit is a bumpy capsule about 3 millimeters long.
Ceanothus hearstiorum is a species of flowering shrub known by the common names Hearst Ranch buckbrush and Hearst's ceanothus. This Ceanothus is endemic to California, where it grows wild only on the hilly coastline of San Luis Obispo County.
Ceanothus foliosus is a species of flowering shrub known by the common name wavyleaf ceanothus.
Ceanothus diversifolius is a species of flowering shrub known by the common name pinemat. This Ceanothus is endemic to California, where it can be found in the oak and pine forests of several mountain ranges.
Ceanothus impressus is a species of shrub in the family Rhamnaceae known by the common name Santa Barbara ceanothus. It is endemic to the Central Coast of California, where it is known from San Luis Obispo and Santa Barbara Counties. It occurs in chaparral habitat.
Arctostaphylos malloryi is a species of manzanita known by the common name Mallory's manzanita. It is endemic to California.
Ceanothus dentatus is a species of shrub in the family Rhamnaceae known by the common name sandscrub ceanothus. It is endemic to California, where it is known only from the Central Coast and its Coast Ranges. It grows in coastal hills, bluffs, and canyons.
Ceanothus incanus is a species of shrub in the family Rhamnaceae known by the common name coast whitethorn. It is endemic to California, where it is known from the San Francisco Bay Area through the North Coast Ranges into the Klamath Mountains.
Ceanothus lemmonii is a species of shrub in the family Rhamnaceae known by the common name Lemmon's ceanothus. It is endemic to California, where it grows on the wooded slopes of the Inner North Coast Ranges and the Sierra Nevada foothills to the west and east, respectively, of the Sacramento Valley.
Ceanothus leucodermis, with the common names chaparral whitethorn or chaparral white thorn, is a species of shrub in the family Rhamnaceae. This Ceanothus is an importance browse for several types of ungulate, such as the mule deer and bighorn sheep, who prefer the new growth and shoots to the older, spiny parts.
Ceanothus maritimus, with the common name maritime ceanothus, is a species of shrub in the buckthorn family Rhamnaceae. It is endemic to San Luis Obispo County, California, where it is known from only a few occurrences in the vicinity of Hearst Ranch. It shares the same range as the similarly rare Ceanothus hearstiorum, growing on the coastal bluffs.
Ceanothus masonii is a species of shrub in the buckthorn family, Rhamnaceae, known by the common name Mason's ceanothus. It is endemic to Marin County, California, where it is known only from an area near Bolinas on the Point Reyes National Seashore. It grows in the coastal chaparral on the windblown bluffs..
Ceanothus oliganthus is a species of shrub in the family Rhamnaceae known by the common name hairy ceanothus or hairy-leaf ceanothus.
Ceanothus parryi, with the common name Parry ceanothus, is a species of shrub in the buckthorn family Rhamnaceae. It is native to Oregon and northern California, where it grows in the canyons of coastal mountain ranges.
Ceanothus parvifolius is a species of shrub in the family Rhamnaceae known by the common name littleleaf ceanothus or littleleaf whitethorn. This deciduous plant is characterized by its blue flowers and flat topped habit, and is endemic to the Sierra Nevada of California, where it grows on mountain flats and coniferous forest.
Ceanothus pinetorum is a species of shrub in the family Rhamnaceae known by the common names Kern ceanothus and Coville ceanothus. It is endemic to the Sierra Nevada of California, where it is known only from the Kern Plateau, a section of the southern Sierra featuring wide meadows and ridges.
Ceanothus pumilus is a species of shrub in the family Rhamnaceae known by the common names dwarf ceanothus and Siskiyou mat.
Ceanothus purpureus, with the common name hollyleaf ceanothus, is a species of shrub in the 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 sonomensis, with the common name Sonoma ceanothus, is a rare species of shrub in the family Rhamnaceae. It is endemic to northern California.
Ceanothus tomentosus, with the common name woollyleaf ceanothus, is a species of shrub in the family Rhamnaceae. It is characterized by pale-blue to deep blue flowers and wooly leaves. It is native to California and Baja California, having an unusual disjunct distribution in the Peninsular Ranges and the north-central Sierra Nevada.
Ceanothus verrucosus is a species of shrub in the family Rhamnaceae known by the common names wart-stem ceanothus, barranca brush, coast lilac and white coast ceanothus. It is endemic to northwestern Baja California and San Diego County, where it grows in coastal sage scrub and coastal succulent scrub habitats. It is considered a rare species north of the international border, as most of the valuable coastal land that hosts this plant in the San Diego area has been claimed for development. In California, several extant populations still remain scattered around the region, such as one protected at Torrey Pines.
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