Xyris laxifolia Mart. in Flora 24: 53. 1841 sec. Charles N. Horn & al. 1994
- =Xyris macrocephala var. major (Mart.) A. Nilsson in Kongl. Svenska Vetensk. Handl. 24: 30. 1892
- =Xyris macrocephala Auct. non Vahl, Enum. Pl. 2: 204. Lanjouw in Pulle, Fl. Sur. 1: 243. 1938
- =Xyris caroliniana var. major (Mart.) Idrobo & L.B. Smith in Caldasia 6: fig. 4. 1954
- =Xyris jupicai var. major (Mart.) L.B. Smith & Downs in Reitz, Fl. Ill. Catarinensis: 9. 1965
