IUCN threat status:

Not evaluated

Distribution

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Distribution

True mountain-mahogany occurs over a large portion of the western United States and northern Mexico. True mountain-mahogany's distribution extends from southern Montana west to southwestern Oregon south to Baja California Norte and northern Mexico and north through the Texas panhandle, extreme western portions of Nebraska, and South Dakota [86,262]. True mountain-mahogany is uncommon in Nevada and Idaho [124,133,260] and occurs only in the easternmost Great Basin ranges [47]. Only a single record exists for true mountain-mahogany in Kansas [262].

Distribution of varieties: Of the true mountain-mahogany varieties, C. m. var. montanus is the most widespread [151]. Cercocarpus montanus var. blancheae occurs on the Channel Islands and in the Western Traverse Range in California and is considered rare [112,177]. Plants Database provides a distributional map of true mountain-mahogany and its varieties. See Powell [223] for descriptions of the distributions of C. m. var. paucidentatus, C. m. var. glaber, and C. m. var. argenteus in the Trans-Pecos region of Texas. Kearney and Peebles [134] provide information on the distributions of C. m. var. paucidentatus and C. m. var. montanus in Arizona.

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