Xyris setigera F. Oliver in im Thurn, Timehri 5: 207. 1886 sec. Charles N. Horn & al. 1994
- Isotype: 4 Dec 1884, E.F. im Thurn 62
- Holotype: 4 Dec 1884, E.F. im Thurn 62
- Isotype: 4 Dec 1884, E.F. im Thurn 62 (US)
- =Xyris setigera var. elongata Steyerm. in Fieldiana, Bot. 28: 112. 1951
- Holotype: Venezuela, Bolivar, Ptari-tepui, 1 Nov 1944, Steyermark 59660
- Isotype: Venezuela, Bolivar, Ptari-tepui, 1 Nov 1944, Steyermark 59660
- Isotype: Venezuela, Bolivar, Ptari-tepui, 1 Nov 1944, Steyermark 59660 (NY)