9b. Ludwigia peploides subsp. glabrescens (Kuntze) P. H. Raven, Reinwardtia. 6: 394. 1964.
Jussiaea repens Linnaeus var. glabrescens Kuntze, Revis. Gen. Pl. 1: 251. 1891 (as Jussieua); J. boydiana Featherman; Ludwigia peploides var. glabrescens (Kuntze) Shinners
Stems glabrous. Leaves alternate, usually not fascicled; stipules symmetrical; petioles of basal leaves 0.7–2.5 cm, those of distal leaves 0.7–6 cm; blade (2–)4–10 cm, apex eglandular-mucronate, surfaces shiny, glabrous. Flowers: anthers subequal, 1.2–1.4 mm; ovary 14–20 mm, apex somewhat broader, glabrous or with scattered hairs, stigma usually exserted beyond anthers, rarely as long as anthers. Capsules 25–40 × 3–4 mm, pedicel 35–90 mm. Seeds 16–18 per locule. 2n = 16.
Flowering summer-early fall. Wet places, along slow-moving rivers, streams, canals, ditches, often growing into main channels as aquatic weeds; 0–900[–3000] m; Ala., Ark., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.; South America (Venezuela).
