Glandular-hairy, aromatic annual, up to 400 mm tall. Leaves alternate, sparsely pilose to glabrous, oblanceolate or linear, margin sinuate-dentate, lower ones petiolate, upper ones auriculate and half clasping at base. Flowerheads radiate, few in branched panicles, rarely solitary; involucral bracts broadly scariose; ray florets equalling or slightly longer than involucre, yellow to orange, occasionally dark-spotted at base; disc florets mauve or brown. Cypselas 8-9 mm long, triangular, 3-winged, with 1 apical window.
Glandular-hairy, aromatic annual to 40 cm. Leaves oblanceolate, toothed to lobed. Flower heads radiate, few in branched panicles, dark purplish with pale yellow rays brown at base. Achenes 8-9 mm long, winged, apical chamber 1-fenestrate.