Large-flowered marsh-pink or sea-pink or rose-gentian

Sabatia gracilis Michaux var. grandiflora A. Gray in A. Gray et al., Syn. Fl. N. Amer. 2(1): 115. 1878 (as Sabbatia)

Herbs annual. Stems single, terete, 1.5–9(–11) dm, branch­ing alternate. Leaves all cauline at flowering time; blade mostly linear, 1–5 cm × 0.5–2 mm or those near base to 5 mm wide, distal leaves filiform. Inflorescences open, few-flowered cymes or solitary flowers; pedicels (20–)40–120 mm. Flowers 5-merous; calyx tube campanulate, 6–25(–30) mm, midveins slightly more prominent than commissural veins, veins not ridged or midveins low-ridged, lobes subulate to linear; corolla pink or occasionally white, eye yellow, projections of eye into corolla lobes oblong, usually with red border, tube 3–8 mm, lobes narrowly to medium-widely obovate, (13–)17–30 × 5–15 mm, apex rounded to subacute; anthers coiling circinately. 2n = 36.

Flowering year-round. Marshes, shores, and wet, open pine and cypress woods; 0–60 m; Ala., Fla.; West Indies (Cuba).