Functionally unisexual shrub, rarely hermaphrodite, compact, to 3 m high. Leaves terete, 1.5-7.5 (-11) cm long, 1-2 mm wide. Inflorescence on male plants with 2-8 flowers, on female plants with 1-3 flowers; involucre 3-4 mm long; rachis c. 1 mm long; pedicels 3.5-5 mm long, densely white appressed-sericeous, with hairs extending on to perianth. Perianth 2.5-4 mm long, pale yellow inside. Pistil recurved, 5.5-6.5 mm long; pollen presenter an oblique disc, 0.5-0.6 mm long, concave in male flowers, with a conical protuberance in female flowers; gland a slightly curved rectangular flap, 0.1-0.3 mm high. Fruit sigmoidal, 1.4-2.6 cm long, 0.6-1.2 cm wide. Seed 9-12 mm long; wing partly down one side of seed body only.