Accepted By:
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Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.
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Blake, S. F. 1916. A revision of the genus Polygala in Mexico, Central America, and the West Indies. Contr. Gray Herb. 2(47): 1–122.
 
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CONABIO. 2009. Catálogo taxonómico de especies de México. 1:. In Capital Nat. México. CONABIO, Mexico City.
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Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.
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Wendt, T. 1979. Notes on the genus Polygala in the United States and Mexico. J. Arnold Arbor. 60(4): 504–514.
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