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The bitterbrush genus - Purshia - as presently circumscribed comprises 8 species of decumbent to arborescent shrubs of interior western North America. Three are common in the United States (table 1). The type species - antelope bitterbrush - has an essentially northern distribution, whereas…
Keywords: Purshia DC. ex Poir, bitterbrush, cliffrose
Source: In: Bonner, Franklin T.; Karrfalt, Robert P., eds. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC. U.S. Department of Agriculture, Forest Service. p. 916-921.