Rhizomatous, erect, branching perennial herbs. Leaves simple, opposite, petiolate or sessile, linear-lanceolate to ovate, ±entire, 3-veined; base cuneate. Capitula terminal, usually solitary, shortly pedunculate, radiate; involucral bracts in 2 or 3 series; bracts lanceolate to narrowly lanceolate, herbaceous, keeled, acute, appressed-hairy; receptacle paleate; paleae lanceolate, keeled, scabrous dorsally. Ray florets female (sometimes with staminodes), fertile; ligule yellow-orange, 2-or 3-lobed. Disc florets bisexual, fertile; corollas 5-lobed, yellow-orange; anther sacs yellow to pale yellow-brown. Achenes obcuneate, not noticeably compressed, irregularly 3-or 4-angled, not winged. Pappus of short persistent connate scales.
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