Xyris hymenachne Mart. in Flora 24: 55. 1841 sec. Charles N. Horn & al. 1994
- =Bull. torrey Bot. Club
- Holotype: Brazil. Rio Branco: Mt. Roraima, Philipp Swamp, 11 Nov 1927, G.H.H. Thte 334
- Isotype: Brazil. Rio Branco: Mt. Roraima, Philipp Swamp, 11 Nov 1927, G.H.H. Thte 334
