Straggly or dense rigid shrub, 0.6-3 m tall, lignotuberous. Branchlets glabrous. Leaves 1-3.5 cm long, 1-1.7 mm wide, glabrous or sparsely hirsute, papillose, glaucous; mucro 0.7-1.4 mm long. Inflorescence predominantly terminal, occasionally axillary, with 8-12 flowers; involucre c. 2.5 mm long; rachis 1-3 mm long, white-hirsute; pedicels 2.5-6.2 mm long, red, glabrous; buds curved. Perianth 3.3-5 mm long, cream-white to yellow, ?tinged red at base, glabrous. Pistil 7.5-11.5 mm long; pollen presenter oblique. Fruit obliquely elliptic, 2-3.2 cm long, 1.1-1.7 cm wide, finely rugose, obliquely beaked; apiculum c. 1 mm long; horns obscure. Seed 13.5-19 mm long; wing broadly and partly down one side of seed body only, black or dark brown.
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