Prunus eremophila is a rare species of plum that is known by its common name Mojave Desert plum. It is endemic to San Bernardino County, California, where it is known only from the Vontrigger Hills of the eastern Mojave National Preserve, including Lanfair Valley. It occurs in Mojave Desert scrub habitat. The plant was described to science only in 2001 or 2002 and little is known about its ecology. This is a bulky shrub with tangled, thorny branches. It reaches over two meters in maximum height.