Succulent shrublet, up to 300 mm tall, with mostly blunt spines formed by old pedicels after fruit fall. Leaves 3-sided. Flowers pink to purplish pink, filamentous staminodes arranged in a cone, pink, nectary a ring. Fruit 7-locular, with top half as long as base, valve rims inconspicuous, valve wings narrow in young stage but absent when older, expanding keels diverging, centre of fruit remaining sunken, old fruit bases not persistent.
Shrublet to 40 cm, branches becoming spiny after capsules have been shed. Leaves sticky, trigonous. Flowers in cymes, pink, filamentous staminodes white with pink tips. Fruits 8-locular, complete covering membranes, closing bodies present.