Monoecious herbs with opposite or alternate, slightly succulent leaves. Flowers unisexual; male flowers in interrupted, bractless spikes at the apex of branchlets, with 5 tepals and 5 stamens; female flowers in fascicles of 1-7 below male inflorescences in the axil of foliaceous bracts, with 3-4 tepals; stigmas 2, style inconspicuous; seeds lenticular, embryo annular. Zn = 18. One sp.,
Archiatriplex nanpinensis G. L. Chu , from N Sichuan (China).