 | species | achyrantha (L.) R. Br. * | 2 | |
 | species | bangii (Rusby) Anon. * | | |
 | species | bettzickiana (Regel) G. Nicholson * | | |
 | species | bettzickiana (Regel) Standl., nom. inval. * | | |
 | species | bettzickiana (Regel) Voss, nom. illeg. * | | |
 | species | boliviana Rusby * | | |
 | species | brasiliana (L.) Kuntze * | 1 | |
 | species | canescens (Humb. & Bonpl. ex Willd.) Moq. * | | |
 | species | capituliflora (Bertero ex Colla) Schinz * | | |
 | species | chacoensis Morong ex Morong & Britton * | | |
 | species | coriacea Herzog * | | |
 | species | culebrasensis Uline * | | |
 | species | dentata (Moench) Stuchlik ex R.E. Fr. * | | |
 | species | dentata (Moench) Scheygr. * | | |
 | species | dubia Kunth * | | |
 | species | echinata Sm. * | | |
| species | elongata (Willd. ex Schult.) Schinz * | 3 | |
 | species | ficoidea (L.) P. Beauv. * | 3 | |
 | species | ficoidea (L.) R. Br. ex Schult., nom. illeg. * | | |
 | species | ficoidea (L.) R. Br., nom. inval. * | | |
 | species | ficoidea (L.) Sm., nom. illeg. * | | |
 | species | flavescens Kunth * | | |
 | species | flavogrisea (Urb.) Urb. * | | |
 | species | floridana (Chapm.) Small * | | |
 | species | frutescens (L'Hér.) R. Br. ex Spreng. * | | |
 | species | gomphrenoides Kunth * | | |
 | species | halimifolia (Lam.) Standl. ex Pittier * | 1 | |
 | species | jacquini (Schrad.) Alain * | | |
 | species | junciflora (Remy) I.M. Johnst. * | | |
 | species | lorentzii Uline * | | |
 | species | martinicensis (Moq.) Standl. * | | |
 | species | martinicensis (Moq.) Stehlé * | | |
 | species | moquinii (Webb ex Moq.) Dusén * | | |
 | species | nigriceps Hook. * | | |
 | species | nigripes Steud. * | | |
 | species | paniculata Kunth * | | |
 | species | paronychioides A. St.-Hil. * | 5 | |
 | species | philoxeroides (Mart.) Griseb. * | | |
 | species | pilosa Moq. * | | |
 | species | polygonoides (L.) R. Br. ex Sweet * | 2 | |
 | species | porrigens (Jacq.) Kuntze * | | |
 | species | pungens Kunth * | 2 | |
 | species | ramosissima (Mart.) Chodat * | 2 | |
 | species | repens J.F. Gmel. * | | |
 | species | repens (L.) Kuntze * | | |
 | species | repens (L.) Link * | | |
 | species | sessilis (L.) DC. | | |
 | species | sessilis (L.) R. Br. ex Schult., nom. superfl. * | | |
 | species | tenella Colla * | 1 | |