• Alternanthera Forsskål, 1775
• Alternanthera achyrantha (L.) R. Br. ex Sweet accepted as Alternanthera pungens Kunth
• Alternanthera achyranthes Forsskal accepted as Alternanthera pungens Kunth
• Alternanthera amoena (Lemaire) Voss accepted as Alternanthera bettzichiana (Regel) Voss
• Alternanthera bettzichiana (Regel) Voss
• Alternanthera brasiliana (Linnaeus) Kuntze, 1891
• Alternanthera caracasana Kunth
• Alternanthera crucis (Moq.) Boldingh
• Alternanthera dentata (Moench) Stuchlik ex R.E. Fries accepted as Alternanthera brasiliana (Linnaeus) Kuntze, 1891
• Alternanthera dolichocephala (Urban) Urban accepted as Alternanthera crucis (Moq.) Boldingh
• Alternanthera echinocephala (Hook. f.) Christoph.
• Alternanthera ficoidea auct. non (L.) R. Br. ex Roemer & J.A. Schultes accepted as Alternanthera tenella Colla
• Alternanthera flavescens Kunth
• Alternanthera flavogrisea Urban
• Alternanthera floridana (Chapman) Small accepted as Alternanthera flavescens Kunth
• Alternanthera glabra Moq. accepted as Alternanthera sessilis (L.) R. Br. ex DC.
• Alternanthera hasslerana Chodat ex Chodat & Hassler accepted as Alternanthera hassleriana Chodat ex Chodat & Hassler
• Alternanthera hassleriana Chodat ex Chodat & Hassler
• Alternanthera ingramiana (Standl.) Schinz
• Alternanthera jacquinii (Schrad.) Griseb. ex Kuntze accepted as Alternanthera brasiliana (Linnaeus) Kuntze, 1891
• Alternanthera maritima (Martius) A. Saint-Hilaire, 1833
• Alternanthera mild mosaic virus
• Alternanthera mosaic virus
• Alternanthera olivacea (Urb.) Urb.
• Alternanthera palmeri S. Wats.
• Alternanthera paronichyoides St.-Hil.
• Alternanthera peploides (Humb. & Bonpl. ex J.A. Schultes) Urban accepted as Alternanthera caracasana Kunth
• Alternanthera philoxeroides (Mart.) Griseb.
• Alternanthera polygonoides auct. non (L.) R. Br. ex Sweet accepted as Alternanthera paronichyoides St.-Hil.
• Alternanthera portoricensis Kuntze accepted as Alternanthera crucis (Moq.) Boldingh
• Alternanthera pungens Kunth
• Alternanthera ramosissima auct. non (Mart.) Chod. accepted as Alternanthera flavescens Kunth
• Alternanthera repens (L.) Link accepted as Alternanthera pungens Kunth
• Alternanthera sessilis (L.) R. Br. ex DC.
• Alternanthera tenella Colla
• Alternanthera trigyna Linnaeus
• Alternanthera yellow vein virus