Stems 2–6 dm from a short, somewhat woody caudex, 4-angled, essentially glabrous; lvs erect or ascending, subsessile, ovate or lance-ovate, 1–2 cm, sometimes bristly above; hypanthium glabrous or nearly so, strongly constricted between the globose base and the short, abruptly flared neck, 5–7(–9) mm at maturity; sep triangular, ciliate, shortly awn-tipped; pet 10–20 mm, glabrous, ascending; anthers oblong, nearly straight, 1–2 mm, scarcely prolonged at the base; self-compatible, the other spp. all self-sterile and with widely spreading pet; 2n=22. Acid bogs on the coastal plain; se. Va. to Fla. and Tex. (R. ciliosa)
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