Glabrous annual herb 1-5 dm high, monoecious; leaves on main stems reducedto scales. Deciduous branchlets 4-12 cm long, with about 15-30 leaves. Stipules lanceolate, 0.8-1.3 mm long. Leaf lamina mostly 5-11 x 3-6 mm. Inflorescences glomerules on deciduous branches. Fruits capsular, oblate, 1.9-2.1 mm in diameter. Seeds trigonous, 0.9-1 mm long.