Meisn. ex Small 1892 - Small JK (1892) A Preliminary List of American Species of Polygonum. Bulletin of The Torrey Botanical Club 19: 351-370. doi: 10.2307/2475489.
Specifications
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Synonyms
Polygonum douglasii subsp. spergulariiforme (Meisn. ex Small) J.C.Hickman