Plants 50-50(-80+) cm (perennating bases ± horizontal rhizomes, internodes not winged). Leaves all or mostly opposite (distal sometimes alternate); blades ± elliptic, 3-6(-10) × 0.8-2.2(-3) cm, bases ± cuneate, margins toothed to subentire, apices ± rounded or obtuse, faces ± scabrellous. Heads borne singly or (2-)3+ in dichasial arrays. Involucres ± hemispheric to turbinate, 8-16 mm diam. Phyllaries 18-24+ in 2-3 series, ± erect, spatulate to lance-linear, 5-9+ mm. Ray florets 0. Disc florets 40-60(-80+); corollas yellow. Cypselae purplish black, ± elliptic, 5-7 mm, faces glabrous or sparsely hirtellous; pappi 0-0.3 mm. 2n = 34.

Flowering Jun-Aug. Pine barrens, bogs, flatwoods; 10-30 m; Fla.