Echinodorus floribundus (Seub.) Seub., Symb. fasc. 13: 113. 1872 sec. Espejo-Serna & López-Ferrari 2008
- ≡Alisma floribundum Seub., Fl. bras. 3: 109. 1847 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Echinodorus muricatus Griseb. in Bonplandia 6: 11. 1858 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Echinodorus grandiflorus var. floribundus (Seub.) Micheli, Monogr. phan. 3: 58. 1881 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Echinodorus macrophyllus var. muricatus (Griseb.) Micheli, Monogr. phan. 3: 50-51. 1881 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Echinodorus grandiflorus var. aureus Fassett in Rhodora 57: 152. 1955 syn. sec. Espejo-Serna & López-Ferrari 2008