Perennials, to 110 cm (rhizomatous, roots fibrous). Leaves green (glaucous), blades (3-5-nerved) narrowly lanceolate to linear (not lobed), leathery, bases attenuate, margins entire (sometimes ciliate), apices acute, faces glabrous; basal petiolate, 10-40 × 0.5-1.5 cm; cauline petiolate or sessile, 2-25 × 0.2-0.8 cm. Heads (3-15) in ± corymbiform arrays. Phyllaries to 1 cm. Receptacles ovoid or ellipsoid to hemispheric; paleae 4-5 mm, glabrous or sparsely hairy, apices obtuse, acuminate. Ray florets 7-14; laminae elliptic to oblanceolate, 12-30 × 5-10 mm, abaxially glabrous. Discs 9-15 × 7-17 mm. Disc florets 100-200+; corollas yellowish green proximally, maroon distally, 3-4 mm; style branches ca. 1 mm, apices acute to blunt. Cypselae 3.4-4.2 mm; pappi ± coroniform, of connate or distinct scales to 1.2 mm. 2n = 36.

Flowering summer-fall. Wet pine savannas, along ditches and bayous, shallow water; 0-50 m; Fla., Ga.