All Species in Amaranthus
- Bigelow's Amaranth (Amaranthus bigelovii)
- Bonebract Amaranth (Amaranthus scleropoides)
- Brown's Amaranth (Amaranthus brownii)
- California Amaranth (Amaranthus californicus)
- Carelessweed (Amaranthus palmeri)
- Florida Amaranth (Amaranthus floridanus)
- Fringed Amaranth (Amaranthus fimbriatus)
- Greenstripe (Amaranthus acanthochiton)
- Gregg's Amaranth (Amaranthus greggii)
- Pigweed (Amaranthus × texensis)
- Pigweed (Amaranthus tucsonensis)
- Plainsman Amaranth (Amaranthus hybridus)
- Powell's Amaranth (Amaranthus powellii)
- Redroot Amaranth (Amaranthus retroflexus)
- Roughfruit Amaranth (Amaranthus tuberculatus)
- Sandhill Amaranth (Amaranthus arenicola)
- Slender Amaranth (Amaranthus viridis)
- Southern Amaranth (Amaranthus australis)
- Spiny Amaranth (Amaranthus spinosus)
- Spleen Amaranth (Amaranthus dubius)
- Spreading Amaranth (Amaranthus crassipes)
- Tamaulipas Amaranth (Amaranthus tamaulipensis)
- Tidalmarsh Amaranth (Amaranthus cannabinus)
- Torrey's Amaranthus (Amaranthus torreyi)
- Trans-Pecos Amaranth (Amaranthus obcordatus)
- Tropical Amaranth (Amaranthus polygonoides)
- Watson's Amaranth (Amaranthus watsonii)
- Wright's Amaranth (Amaranthus wrightii)