Accepted By:
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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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McNeill, J. 1975. A generic revision of Portulacaceae tribe Montieae using techniques of numerical taxonomy. Canad. J. Bot. 53(8): 789–809.
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