Pigweed (Amaranthus) -

• Pringle's Amaranth (Pringlei)
  
• Bonebract Amaranth (Scleropoides)
  
• Texensis (Texensis)
  
• Thunberg's Amaranthus (Thunbergii)
  
• Powell's Amaranth (Powellii)
  Powell's Amaranth
• Tropical Amaranth (Polygonoides)
  
• Slim Amaranth (Hybridus)
  
• African Amaranth (Muricatus)
  
• Trans-Pecos Amaranth (Obcordatus)
  
• Carelessweed (Palmeri)
  
• Torrey's Amaranthus (Torreyi)
  
• Seaside Amaranth (Pumilus)
  
• Fringed Amaranth (Venulosus)
  
• Slender Amaranth (Viridis)
  
• Watson's Amaranth (Watsonii)
  
• Wright's Amaranth (Wrightii)
  
• Tucsonensis (Tucsonensis)
  
• Roughfruit Amaranth (Tuberculatus)
  
• Redroot Amaranth (Retroflexus)
  
• Spiny Amaranth (Spinosus)
  
• Joseph's-coat (Tricolor)
  
• Prince-of-Wales Feather (Hypochondriacus)
  
• Gregg's Amaranth (Greggii)
  
• Purple Amaranth (Blitum)
  Purple Amaranth
• Brown's Amaranth (Brownii)
  
• California Amaranth (Californicus)
  
• Australian Amaranth (Lineatus)
  
• Mat Amaranth (Blitoides)
  
• Bigelow's Amaranth (Bigelovii)
  
• Acutilobus (Acutilobus)
  
• Southern Amaranth (Australis)
  
• Prostrate Pigweed (Albus)
  
• Sandhill Amaranth (Arenicola)
  
• Tidalmarsh Amaranth (Cannabinus)
  
• Love-lies-bleeding (Caudatus)
  
• Spleen Amaranth (Dubius)
  
• Fringed Amaranth (Fimbriatus)
  
• Florida Amaranth (Floridanus)
  
• Mediterranean Amaranth (Graecizans)
  
• Largefruit Amaranth (Deflexus)
  
• Red Amaranth (Cruentus)
  
• Chihuahuensis (Chihuahuensis)
  
• Spreading Amaranth (Crassipes)
  Spreading Amaranth
• Crispleaf Amaranth (Crispus)
  
• Greenstripe (Acanthochiton)