Local. Flower, fruit. Plants strongly rhizomatous. Leaves opposite below, alternate within the inflorescence and below it. Stems erect; inflorescence and flowers erect. Occasional. Leaves with 15-18 pairs of teeth, veins impressed above. Stems, pedicels, pods all with appressed hairs non-glandular. Corolla mauve, 10-11 mm long, glabrous inside and outside, notch in petals 2-3 mm deep. Seed finely papillate (unsure if in rows); pedicels 12-15 mm.