Accepted By:
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Flora of North America Editorial Committee. 2009. Magnoliophyta: Paeoniaceae to Ericaceae. 8: i–xxiv, 1–585. In Fl. N. Amer.. Oxford University Press, New York.
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Hartman, R. L. & B. E. Nelson. 1998. Novelties from North America north of Mexico: A 20-Year Vascular plant Diversity Baseline. 1–51 (mss.).
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Nakai, K. M. 1987. Some new and reconsidered California Dudleya (Crassulaceae). Madroño 34: 334–353.
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