A shrubby herb that is branched from the base and having branches that are sharply angled. Its leaves are opposite and petiolate, with the petiole up to 5 mm long. The leaflets are ovate in shape, up to 10 to 12 cm long and up to 4 to 7 cm wide, they are acuminate at the tip and rounded to cordate at the base. The purplish flowers are arranged in dense cymes, up to 1 cm long with bracts that are acute; its sepals are towards the middle and usually with hairs around the margins.