Ceanothus cuneatus
Encyclopedia
Ceanothus cuneatus is a species of flowering shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

 known by the common names Buckbrush and wedgeleaf ceanothus.

Distribution

This Ceanothus
Ceanothus
Ceanothus L. is a genus of about 50–60 species of shrubs or small trees in the buckthorn family Rhamnaceae. The genus is confined to North America, the center of its distribution in California, with some species in the eastern United States and southeast Canada, and others extending as far south...

is native to Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

, California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, and northern Baja California
Baja California
Baja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...

, where it can be found in a number of habitats, especially chaparral
Chaparral
Chaparral is a shrubland or heathland plant community found primarily in the U.S. state of California and in the northern portion of the Baja California peninsula, Mexico...

.

Description

Ceanothus cuneatus is a spreading bush, rounded to sprawling, reaching up to 3 meters in height. The evergreen leaves are stiff and somewhat tough and may be slightly toothed along the edges. The bush flowers abundantly in short, thick-stalked raceme
Raceme
A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...

s bearing rounded bunches of tiny flowers, each about half a centimeter wide.

The flowers are white, sometimes tinted strongly with blue or lavender. The fruit is round capsule with horns. It is about half a centimeter wide and contains three shiny dark seeds which are dispersed when the capsule explodes and propels them some distance. Harvester ant
Harvester ant
Ants known as Harvester ants include:species*Red harvester ant *Florida harvester ant *Maricopa harvester ant , the most venomous insect in the world....

s have been known to cache the seeds, which can lie dormant for a long time since fire is required for germination. This plant may be variable in appearance because it hybridizes easily with similar species.

While this shrub has a wide distribution in its range, certain varieties of the species are limited to small areas. The Monterey ceanothus (var. rigida), for example, is found only between the southern edge of the San Francisco Bay Area
San Francisco Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a populated region that surrounds the San Francisco and San Pablo estuaries in Northern California. The region encompasses metropolitan areas of San Francisco, Oakland, and San Jose, along with smaller urban and rural areas...

 and San Luis Obispo County
San Luis Obispo County, California
San Luis Obispo County is a county located along the Pacific Ocean in the Central Coast of the U.S. state of California, between Los Angeles and the San Francisco Bay Area. As of the 2010 census its population was 269,637, up from 246,681 at the 2000 census...

.

External links

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