Perennials, 40-100+ cm (tubers 2-4 cm). Leaves all opposite, or opposite and alternate, or all alternate; blades linear-filiform, the larger 3-7 cm × 0.5-2 mm. Involucres campanulate to hemispheric, 10-12 × 10-15 mm. Paleae 7-8 × 1.5-2 mm (central lobes usually longer than lateral lobes). Phyllaries spreading. Ray laminae 20-40 mm. Disc florets 40+; corollas 4-5 mm. Cypselae 3.5-4 mm; pappi of 1-2, lacerate scales 0.2-2 mm plus 0-4 scales 0.2-0.3 mm. 2n = 34.

Flowering May-Sep. Sandhills, flatwoods; 10-30+ m; Ala., Fla.

Phoebanthus tenuifolius in known from southeastern Alabama and the panhandle of Florida.