Ludwigia octovalvis (Jacq.) P.H.Raven
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Ludwigia octovalvis (Jacq.) P.H.Raven { Oenothera octovalvis Jacq.} () D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 552 (1972) [V. Frazier]