Shrubs, monoecious or dioecious. Leaves fleshy. Flowers unisexual: staminate ones perianth-less with 3 or fewer short stamens, sessile under a peltate, stipitate scale, in spiciform infloresences; pistillate ones solitary or 2 together, axillary, their perianths connate with ovary; stigmas 2, horizontally expanded; fruiting perianth horizontally winged at apex. Seeds vertical. One to two spp., N America.