Perennial, much-branched, bushy herb, 20–50 cm tall. Leaves are oblong to oblanceolate, remotely dentate or entire, opposite and petiolate in the lower parts but alternate and sessile above, 2–8 cm long and 0.4–1.8 cm wide. Heads are yellow and radiate, arranged in corymbose racemes borne on long peduncles (1.5–8 cm), and about 15 mm across. Ray florets are oblong, about twice as long as the width of the central disc or longer. Fruits are oblong to obovate achenes with three equal, thin, membranous wings, each about 10 mm long.