Annual or perennial, slender, suffruticose, roughly pubescent, often viscid herb; stem much branched with many spreading branches; leaves alternate, sessile, lanceolate or oblong-lanceolate from a broad auricled base, acuminate, entire, often scabrid above; upper amplexicaul, basal auricled, rounded; heads terminal, solitary or leaf opposed on slender, spreading peduncles, woolly, radiate and heterogamous; involucres campanulate, bracts many seriate, narrow, slender, scarious, outer shorter; flower orange-yellow, as long as the involucral bracts; ray florets 1-2 seriate, female, fertile, ligulate, 2-3 toothed;disk florets bisexual, fertile; stamens-5, epipetalous, syngenecious, anthers sagitate, slender, tubular, limb dilated, 5-toothed; anther base sagitate, tails slender; ovary 1-celled, 1-ovuled, solitary, basal, obtuse, style arms of bisexual florets flattened, broader upwards, obtuse or truncate; achenes pale, terete, sparsely hairy; pappus hairs 1-seriate, few, slender, free at the base, smooth, scabrid or bearded.