Stems to 40 cm long; branches divaricate. Leaves of branches: crowded, lamina divaricate, 3-10 mm long, pungent, dark green; margins finely scabrid; nerves 5 decreasing to 3 below apex, rounded; grooves open, smooth or slightly scabrid; auricles narrowly triangular, less than 1 mm long, entire or slightly lacerated; primary-stem leaves not seen. Flowers in terminal clusters; pedicels 1-2 mm long. Sepals and petals 3 mm long, white. Stamens 1.5-2 mm long. Pistil 2-2.5 mm long, tapering above ovary but stout. Capsule 4-5 mm long, verrucose; tubercles obtuse, to 0.3 mm long. Seed ellipsoidal, 3.5-4 mm long, finely reticulate.