| 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 | 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 | |