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Coulter pine is a native evergreen conifer that lives up to 100 years of age. [2] Coulter pine occurs in a mediterranean climate. Winter rains are infrequent, and the summer is dry with occasional summer thunderstorms. [3] It is a native of the coastal mountains of Southern California in the United States and northern Baja California in Mexico.
Overstory species include coulter pine, monterey pine, bishop pine, shore pine, and several endemic cypresses, species which generally rely on fire to open their cones and release seeds. Closed-cone forests often grow in low nutrient and/or stressed soils, which can lead to slow growth.
The higher elevation Madrean Sky Islands are dominated by pinyon pine and California juniper (Juniperus californica), with areas of Manzanita and Coulter pine (Pinus coulteri). More than half of the Colorado Desert's plant species are herbaceous annuals, and appropriately timed winter rains produce abundant early Spring wildflowers. In the ...
Small patches of coniferous forest are dominated by Ponderosa pine, Jeffrey pine, Sugar pine, Coulter pine, Coast Douglas-fir, incense-cedar, white fir and western juniper. Shrubby and herbaceous plants including many endemic species inhabit this ecoregion, and it is estimated there are 2036 species of them.
Pinus jeffreyi occurs from southwest Oregon south through much of California (mainly on the eastern side of the Sierra Nevada), to northern Baja California in Mexico. It is a high-altitude species; in the north of its range, it grows widely at 1,500 to 2,100 m (4,900 to 6,900 ft) altitude, and at 1,800 to 2,900 m (5,900 to 9,500 ft) in the south of its range.
The gray pine (Pinus sabiniana) and rarer Coulter pine (Pinus coulteri) can be found at all elevations, especially between 800–3,000 feet (240–910 m). Coulter pine reaches its northern limit on northern of Mt. Diablo.
Bishop pine (Pinus muricata): coastal species grown in gardens; Coulter pine (Pinus coulteri) Gray pine, ghost pine, or digger pine (Pinus sabiniana) Knobcone pine (Pinus attenuata) Ponderosa pine (Pinus ponderosa): well known in mountains; Lodgepole pine (Pinus contorta): used for early construction of buildings and other structures.
The Algodones Dunes. The Colorado Desert is a subregion of the larger Sonoran Desert, [1] covering about 7 million acres (2.8 million ha; 28,000 km 2). [2] The desert occupies Imperial County, parts of San Diego and Riverside counties, and a small part of San Bernardino County in California, United States, [3] as well as the northern part of Mexicali Municipality in Baja California, Mexico.