Stems to 1 m, angular, clustered on a stout rhizome; internodes progressively longer distally, the lower ones of the branches commonly much elongate; lvs lanceolate or lance-linear to (especially the lower) elliptic or oblong, sessile, 2–5 cm, acuminate, usually distinctly 5-nerved; pedicels 1–3(–5) mm; cal-lobes linear, long-tapering, 4–9 mm; cor-lobes white, drying creamy, oblanceolate, 8–18 mm; 2n=36. Wet pine-barrens on the coastal plain, often somewhat weedy; N.J. to Fla. June–Aug. (S. lanceolata)
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