Species:
Amaranthus albus (amaranth, white pigweed)
Amaranthus blitoides (prostrate pigweed, mat amaranth)
Amaranthus californicus (California amaranth)
Amaranthus hybridus (smooth pigweed)
Amaranthus powellii (Powell's amaranth)
Amaranthus retroflexus (rough pigweed, redroot amaranth)