Cedronella

Perennial herbs, woody at base. Leaves digitately 3(-5)-foliolate, thin-textured, toothed. Inflorescences dense, of many crowded verticils, lowest verticil often a distance below the rest; verticils densely many-flowered, made up of opposite, much-branched cymes, lower cymes pedunculate; bracts narrow, simple or 3-foliolate; bracteoles linear-filiform. Calyx tubular-campanulate, 13-15-nerved, equally 5-toothed; teeth narrowly lanceolate-deltoid, subulate, erect. Corolla tube exserted, somewhat widened at throat, glabrous within; upper lip erect, somewhat hooded, 2-fid or emarginate, +/- equal in length to the lower; lower lip spreading, 3-fid with median lobe the largest. Stamens 4, didynamous, ascending under upper lip or slightly exserted, upper pair longer than lower; anthers 2-thecous; thecae parallel, distinct. Style shortly 2-fid; lobes equal. Nutlets ovoid, smooth. x = 10 (1 report).