Arctostaphylos osoensis

Last updated

Arctostaphylos osoensis
Arctostaphylos osoensis (Oso manzanita) (32615346866).jpg
Status TNC G1.svg
Critically Imperiled  (NatureServe) [1]
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Arctostaphylos
Species:
A. osoensis
Binomial name
Arctostaphylos osoensis
P.V.Wells

Arctostaphylos osoensis is a species of manzanita known by the common name Oso manzanita. It is endemic to San Luis Obispo County, California, where it is known from only two occurrences on the northern edge of the Los Osos Valley.

Description

This is a spreading shrub reaching at least a meter in height and known to grow over four meters tall. The bark is grayish in color and shreddy. The foliage is dense with shiny, pointed, smooth-edged or toothed green to reddish leaves each up to 3 centimeters long.

The inflorescence is a loose bunch of urn-shaped manzanita flowers each about 6 millimeters long. The fruit is a hairless drupe between 0.5 and one centimeter wide containing several rounded seeds.


  1. "NatureServe Explorer 2.0".

Related Research Articles

<i>Arctostaphylos patula</i> Species of flowering plant

Arctostaphylos patula is a species of manzanita known by the common name greenleaf manzanita. This manzanita is native to western North America where it grows in coniferous forests at moderate to high elevations.

<i>Arctostaphylos glauca</i> Species of tree

Arctostaphylos glauca is a species of manzanita known by the common name bigberry manzanita. It is native to California and Baja California, where it grows in the chaparral and woodland of coastal and inland hills.

<i>Arctostaphylos nummularia</i> Species of flowering plant

Arctostaphylos nummularia is a species of manzanita known by the common names glossyleaf manzanita, dwarf manzanita and Fort Bragg manzanita. It is endemic to California, where it grows in the forests of the coastal and inland ranges north of the San Francisco Bay.

<i>Arctostaphylos bakeri</i> Species of flowering plant

Arctostaphylos bakeri is a species of manzanita known by the common name Baker's manzanita. It is endemic to Sonoma County, California, where it grows in the chaparral and woodlands of the North Coast Ranges. It is sometimes a member of the serpentine soils flora.

<i>Arctostaphylos canescens</i> Species of flowering plant

Arctostaphylos canescens, common name hoary manzanita, is a species of manzanita.

<i>Arctostaphylos densiflora</i> Species of flowering plant

Arctostaphylos densiflora, known by the common name Vine Hill manzanita, is a very rare species of manzanita. It is endemic to Sonoma County, California, where it is known from only one extant population of 20 to 30 individual plants. These last wild members of the species are on land near Sebastopol which is owned and protected by the California Native Plant Society. In addition, there are five to ten plants of this manzanita taxon growing on private property about a mile away. The local habitat is mostly chaparral on sandy shale soils.

Arctostaphylos glandulosa subsp. gabrielensis, known by the common name San Gabriel manzanita, is a subspecies of manzanita. It is endemic to one small area in the San Gabriel Mountains of Los Angeles County, California.

<i>Arctostaphylos glutinosa</i> Species of flowering plant

Arctostaphylos glutinosa is a species of manzanita known by the common name Schreiber's manzanita. It is endemic to Santa Cruz County, California, where it is known from only a few occurrences on the western slopes of the Santa Cruz Mountains. It grows in the chaparral of the limestone and diatomaceous shale ridges on the coastline.

<i>Arctostaphylos imbricata</i> Species of flowering plant

Arctostaphylos imbricata is a species of manzanita known by the common name San Bruno Mountain manzanita.

<i>Arctostaphylos mewukka</i> Species of flowering plant

Arctostaphylos mewukka is a species of manzanita known by the common name Indian manzanita.

<i>Arctostaphylos montereyensis</i> Species of flowering plant

Arctostaphylos montereyensis is a species of manzanita known by the common names Monterey manzanita and Toro manzanita. It is endemic to Monterey County, California, where it is known from only a few occurrences around Fort Ord and Toro County Park near Salinas. It is a plant of maritime chaparral on sandy soils.

<i>Arctostaphylos nissenana</i> Species of flowering plant

Arctostaphylos nissenana is a species of manzanita known by the common name Nissenan manzanita. It is endemic to California, where it grows in the woodlands and chaparral of the Sierra Nevada foothills, mostly in El Dorado County.

Arctostaphylos pechoensis is a species of manzanita known by the common name Pecho manzanita. It is endemic to California, where it is known only from the Pecho Hills southwest of San Luis Obispo in San Luis Obispo County, California.

<i>Arctostaphylos purissima</i> Species of flowering plant

Arctostaphylos purissima is a species of manzanita known by the common name La Purisima manzanita.

<i>Arctostaphylos refugioensis</i> Species of flowering plant

Arctostaphylos refugioensis is a species of manzanita, known by the common name Refugio manzanita. It is endemic to Santa Barbara County, California, where it can be found along the immediate coastline, including the vicinity of Refugio State Beach, and into the Santa Ynez Mountains of the northwestern Transverse Ranges.

<i>Arctostaphylos regismontana</i> Species of flowering plant

Arctostaphylos regismontana is a species of manzanita known by the common name Kings Mountain manzanita. It is endemic to California, where it is known from the northern slopes of the Santa Cruz Mountains in the southern San Francisco Bay Area.

<i>Arctostaphylos rudis</i> Species of flowering plant

Arctostaphylos rudis, with the common names Shagbark manzanita and Sand mesa manzanita, is a species of manzanita.

<i>Arctostaphylos silvicola</i> Species of tree

Arctostaphylos silvicola is a species of manzanita known by the common names Bonny Doon or silverleaf manzanita. It is endemic to the sandhills of the southern Santa Cruz Mountains in California's Santa Cruz and Santa Clara counties.

<i>Arctostaphylos virgata</i> Species of tree

Arctostaphylos virgata is a species of manzanita known by the common names Bolinas manzanita and Marin manzanita.

<i>Arctostaphylos gabilanensis</i> Species of tree

Arctostaphylos gabilanensis is a rare species of manzanita known by the common name Gabilan manzanita.