Amaranthus L.
Erect or prostrate herbs. Fruit dry, membranous Amaranthus
Bracts with short points or none, shorter or not much longer than the perianth. Perianth segments usually 3, if 5 then fruit with 3 swollen styles. Fruit indehiscent or bursting irregularly.
Flowers in axillary clusters.
Flowers in elongated spikes, axillary or forming terminal panicles