- Amaranthus acanthochiton, Greenstripe
- Amaranthus acutilobus, Euxolus emarginatus A Braun & Bouch
- Amaranthus albus, White Pigweed
- Amaranthus arenicola, Sandhill amaranth
- Amaranthus ascendens
- Amaranthus australis, Southern amaranth
- Amaranthus blitoides, Prostrate Pigweed
- Amaranthus blitum, Guernsey Pigweed
- Amaranthus bracteosus
- Amaranthus brownii, Browns amaranth
- Amaranthus californicus, California amaranth
- Amaranthus cannabinus, Tidalmarsh Amaranth
- Amaranthus capensis, Cape Pigweed
- Amaranthus caracasanus
- Amaranthus caudatus, Love-lies-bleeding
- Amaranthus centralis
- Amaranthus chihuahuensis
- Amaranthus clementii
- Amaranthus cochleitepalus
- Amaranthus crassipes, Spreading amaranth
- Amaranthus crispus, Crisp-leaved Amaranth
| - Amaranthus cruentus, Redshank
- Amaranthus cuspidifolius
- Amaranthus deflexus, Perennial Pigweed
- Amaranthus dubius, Spleen amaranth
- Amaranthus fimbriatus, Fringed amaranth
- Amaranthus floridanus, Florida amaranth
- Amaranthus graecizans, Short-tepalled Pigweed
- Amaranthus grandiflorus, Large-flowered Amaranth
- Amaranthus greggii, Greggs amaranth
- Amaranthus hybridus, Princes Feather
- Amaranthus hypochondriacus, Princes-feather
- Amaranthus induratus
- Amaranthus interruptus, Native Amaranth
- Amaranthus lividus
- Amaranthus macrocarpus, Dwarf Amaranth
- Amaranthus mitchellii, Boggabri Weed
- Amaranthus muricatus, Rough-fruit Amaranth
- Amaranthus obcordatus, Trans-Pecos amaranth
- Amaranthus palmeri, Dioecious Amaranth
- Amaranthus patulus
- Amaranthus polygonoides, Tropical amaranth
| - Amaranthus powellii, Powells Amaranth
- Amaranthus pringlei, Pringles amaranth
- Amaranthus pumilus, Seaside amaranth
- Amaranthus quitensis, Mucronate Amaranth
- Amaranthus retroflex, Redroot amaranth
- Amaranthus retroflexus, Common Amaranth
- Amaranthus rhombeus
- Amaranthus scariosus
- Amaranthus schinzianus
- Amaranthus scleropoides, Bonebract amaranth
- Amaranthus spinosus, Spiny Amaranth
- Amaranthus standleyanus, Indehiscent Pigweed
- Amaranthus thunbergii, Thunbergs Pigweed
- Amaranthus torreyi, Torreys amaranthus
- Amaranthus tricolor, Josephs Coat
- Amaranthus tuberculatus, Rough-fruited Water-hemp
- Amaranthus undulatus
- Amaranthus viridis, Green Amaranth
- Amaranthus watsonii, Watsons Amaranth
- Amaranthus wrightii, Wrights amaranth
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