Herbs, monoecious or sub-dioecious, erect, sparsely branched, (1-)3-10 dm; branches obtusely angled, rather rigidly ascending, finely farinose when young. Leaves mostly alternate; petiole 0.5-2.5 cm, becoming shorter or subsessile in distal ones; blade deltoid to rhombic-ovate or lanceolate, (10-)15-50(-70) × 8-40 mm, base rounded, truncate, or broadly cuneate, margin irregularly sinuate-dentate or repand-dentate to entire, sometimes subhastate, apex obtuse to acute; distal blades often narrower and sometimes entire except for basal lobes. Flowers in dense or interrupted, naked, simple or paniculate spikes mainly 5-8 mm thick, staminate ones 4-merous. Fruiting bracteoles densely packed on rachis, sessile, ovate-oblong or rounded-deltoid, (2-)2.5-3(-4.5) mm, united only at rounded or truncate base, angled and cristate on faces, thin or spongy-thickened. Seeds dark brown or black, 0.8-1.5 mm; radicle inferior.
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