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Pinus washoensis
Also called Ponderosa Pine, North Plateau Ponderosa Pine
Pinus washoensis, the Washoe pine, is a rare, semi-disputed species of large-sized conifer in the family Pinaceae. The species was described by Herbert Louis Mason and William Palmer Stockwell in 1945. It is in the Pinus subsect. Ponderosae with the Ponderosa pine.
Pinus washoensis is native to a small portion of Washoe County, Nevada, and two other separate locations in northeastern California. Its range is located within dry-montane forests and mixed-conifer forests at upward elevations of 2100–2500 m (6889–8202 ft) in the Sierra Nevada. The United States Department Of Agriculture (USDA) and the United States Geographical Survey (USGS) claim that populations in the Warner Mountains may reach elevations of 8,000 ft (2,400 m); most likely being the case. Pinus washoensis prefers west or south-facing slopes (although this is still partially disputed). The largest population is located in the southern Warner Mountains of California. There is a potential population in upper Hayfork Creek, Trinity Mountains, California, that has incredibly tall individuals which may be its own distinct taxon. Populations have been recorded from far southern Oregon too, but are limited to an extent. It is seen growing beside Pinus ponderosa subsp. ponderosa, Pinus ponderosa subsp. benthamiana, Pinus jeffreyi, Pinus monticola, and Pinus contorta.
Whitebark Pine · Amami Pine · Rocky Mountains Bristlecone Pine · Arizona Pine · Pinus armandii var. mastersiana · Chinese White Pine · Pinus arunachalensis · Knobcone pine · Mexican White Pine · Foxtail Pine · Jack pine · Bhutan Pine
Text excerpted from the Wikipedia article Pinus washoensis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
