Dwarf shrub, up to 0.35 m high; spinescent. Stems with spines and younger stems whitish grey to beige. Leaves 10-15 mm long, epidermis cells convex to papillate. Flowers: terminal; corolla 9-18 mm in diameter; petals bright pinkish purple; Jan.-Dec. Fruit 5-locular.
Shrub, ± 350 mm tall. Leaves 3-sided, surfaces convex, apex abruptly sharp-tipped. Flowers numerous in spiny cymes, 9-18 mm diam., petals 1 mm broad, dark pink, filamentous staminodes pale magenta. Fruit with narrow valve wings.