Lythrum paradoxum is a plant in the Lythraceae family and was first described in 1897 by Bernhard Adalbert Emil Koehne.Koehne, B.A.E. (27 August 1897), Lythraceae adjectis specierum nonnullarum extraamericanorum descriptionibus. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 23 (Beiblatt 57): 19
It is an erect woody plant growing to heights of 0.6 to 1 m.
It is native to all mainland states of Australia, where it is found in sandy or alluvial soils along creeks and drainage areas (in damp places).
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