Accepted By:
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Hultén, O. E. G. 1968. Flora of Alaska and neighboring territories. i–1008. In Fl. Alaska. Stanford University Press, Stanford.
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Scoggan, H. J. 1978. Dicotyledoneae (Saururaceae to Violaceae). 3: 547–1115. In Fl. Canada. National Museums of Canada, Ottawa.
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