Tumbleweed, Tumbling Pigweed, White Pigweed: Amaranthus albus (Synonyms: Amaranthus albus var. pubescens, Amaranthus pubescens) -
Maltweed, Prostrate Pigweed, Tumbleweed Amaranth: Amaranthus blitoides (Synonym: Amaranthus graecizans) -
California Amaranth: Amaranthus californicus (Synonym: Mengea californica) -
Argentine Amaranth, Largefruit Amaranth: Amaranthus deflexus -
Green Amaranth, Green Pigweed, Hybrid Amaranth, Slender Pigweed: Slim Amaranth, Smooth Amaranth, Smooth Pigweed: Amaranthus hybridus -
Prince's-feather: Amaranthus hypochondriacus -
Green Amaranth, Powell's Amaranth: Amaranthus powellii (Synonyms: Amaranthus bracteosus, Amaranthus powellii ssp. bouchonii, Amaranthus powellii ssp. powellii, Atriplex retroflexus var. powellii) -
Redroot Amaranth, Rough Pigweed: Amaranthus retroflexus (Synonym: Amaranthus retroflexus var. salicifolius) -