Sprawling, monoecious or dioecious shrub to 2 m. Leaves simple, grass-like with clasping sheath 30-60 mm long, stipules narrowly triangular, 4-10 mm long, leaf blade linear-lanceolate, 50-150 x 3-6 mm. Flowers: male: stamens ± 30; female: receptacle 4-5 mm long, oblong, greenish, sulcate.