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Year
2004
Citation

Anderson, J. L., S. Richmond-Williams, and O. Williams. 2004. Penstemon lanceolatus Benth. or P. ramosus Crosswhite in Arizona and New Mexico, a Peripheral or Endemic Species? Bureau of Land Management. Phoenix, AZ 85027 and Las Cruces, NM 88005. Pages 8-

Reference Code
U04AND02NMUS