Annual or perennial herb, prostrate to erect, branching from base, mealy. Leaves opposite or alternate, subsessile or prominently petiolate, elliptic, deltate, hastate or orbicular; lamina 5–20 mm long. Inflorescence of small cymes aggregated into narrow or broad panicles. Flowers sessile, depressed-globular, 1–2 mm diam.; terminal flowers male or bisexual; lateral flowers female. Tepals 5, shortly united at base, densely mealy outside. Stamens 5, united into a circular disc which is sparsely pubescent within. Fruit enveloped by perianth. Pericarp membranous to succulent. Seed horizontal, lenticular with rounded margin, 1–1.5 mm diam.; testa almost smooth to slightly rugulose or striate, black.
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