Herb. Leaves proximally opposite, distally alternate, linear. Capitula terminal, solitary, heterogamous and radiate; receptacle flat to conical, epaleate; phyllaries 1–2-seriate. Ray florets 1-seriate, female; disc florets numerous, hermaphrodite, proximally cylindrical, more distally campanulate and with 5 teeth; anthers 5, obtuse at the base, with triangular appendages at the apex; style-branches flattened, with narrowed and linear appendages, minutely puberulous. Achenes ellipsoid, slightly compressed, smooth and glabrous but for slightly ribbed margins; pappus absent or a minute annular rim.