Erect shrub, ± 500 mm tall, lateral shoots becoming spiny, internodes dark brown. Leaves 3-sided, 6-9 x 3.5 mm, dark grey-green, with raised dots and low papillae. Flowers solitary or in small cymes, 18 mm diam., petals ± 1 mm broad, magenta, filamentous staminodes and filaments pale pink. Fruit 5-locular, base short, funnel-shaped, top semi-globular, rims high, covering membranes convex, closing rodlets protruding, closing body hook-shaped, expanding keels almost touching at base, dispersed by tumbling.
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