Accepted By:
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CONABIO. 2009. Catálogo taxonómico de especies de México. 1:. In Capital Nat. México. CONABIO, Mexico City.
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Cronquist, A. J. 1994. Asterales. 5: 1–496. In A. J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermount. Fl.. Hafner Pub. Co., New York.
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Flora of North America Editorial Committee. 2006. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. 21: i–xxii, 1–616. In Fl. N. Amer.. Oxford University Press, New York.
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Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
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Shreve, F. & I. L. Wiggins. 1964. Veg. Fl. Sonoran Desert 2 vols. Stanford University Press, Stanford.
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