The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Bailey, L.H. & E.Z. Bailey. 1976. Hortus Third i–xiv, 1–1290. MacMillan, New York.
- Report on the United States and Mexican Boundary . . . Botany 2(1): 218–219. 1859. (Rep. U.S. Mex. Bound.)
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