Rhizomatous, densely branched, perennial plants. Leaves elongate-elliptic or oblong to linear, usually glandular punctate with hastate or auriculate base. Flowers arranged in dense axillary or terminal racemes or branched panicle, small, pedicellate. Tepals ± unequal. Stamens 8 (9-10), equal, dilated at the base. Nuts triquetrous, obtuse, black. Cotyledons incumbent, narrow.