Perennial, somewhat fleshy, glabrous herb or subshrub 3–6(–10) dm, commonly decumbent and branching at base; lvs oblanceolate to linear oblong or elliptic, mostly 1.5–4(–6) cm × 4–10 dm, entire or with a few spreading teeth, scarcely or obscurely petiolate, only the lower opposite; invol 4–7 mm, accrescent, with 6–9 broad, rounded, imbricate bracts; pistillate fls 2–4, with tubular cor 1–1.5 mm tending to persist on the copiously resin-dotted achene; 2n=34. Dunes along the seashore; Va. to Fla., and La.; Bahamas; Cuba. Aug., Sept.