Perennial herbs and subshrubs. Leaves often with a purple blotch on the midvein. Epicalyx absent. Calyx lobes lanceolate. Corolla red, petals erect, often narrow. Staminal column exerted, antheriferous at apex. Styles 7-15, stigmas clavate. Fruits schizocarpic, oblate. Mericarps 7-15, umbonate dorsally, lateral walls evanescent at maturity, single-seeded; seed glabrous. Endoglossum absent.