Accepted By:
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Flora of North America Editorial Committee. 2014. Magnoliophyta: Picramniaceae to Rosaceae. 9: i–xxiv, 1–713. In Fl. N. Amer.. Oxford University Press, New York.
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Welsh, S. L. 1974. Anderson's Fl. Alaska Adj. Parts Canada i–xvi, 1–724. Brigham Young University Press, Provo.
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