Fl. S.E. U.S., 309. 1903.
Stems often purplish, 3–27 cm. Leaves often purplish, 1.5–4 × 0.5–1.5 mm. Inflorescences: floral bracts 2–4 mm. Flowers 8–14 mm; perianth purple or white with purplish longitudinal stripes inside throat and purplish perianth lobes; lobes erect, incurved and converging but not connate; outer lobes ovate to triangular, 1.5–4 mm; inner lobes lanceolate, ± as long as outer. Capsules 3–6 mm.
Phenology: Flowering late summer–fall.
Habitat: Bogs, alluvial and upland rich woods
Elevation: 0–100 m
Ala., Fla., Ga., La., Miss., Tex., Mexico, West Indies, Central America, South America (to Peru, Paraguay, Bolivia, Brazil).