Juncus microcephalus Kunth, Nov. gen. sp. 1: 237. 1815 sec. Espejo-Serna & López-Ferrari 2008
- =Juncus floribundus Kunth, Nov. gen. sp. 1: 237-238. 1815 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus microcephalus var. intermedius E. Mey., Syst. Veg. 7: 195-196. 1829 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus microcephalus var. major Schult. & Schult. f., Syst. Veg. 7: 195-196. 1829 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus microcephalus var. floribundus (Kunth) Kunth, Enum. pl. 3: 333. 1841 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus rudis Kunth, Enum. pl. 3: 333. 1841 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus sellowianus Kunth, Enum. pl. 3: 336. 1841 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus involucratus Steud. ex Buchenau in Abh. Naturwiss. Vereins Bremen 4: 121. 1874 syn. sec. The Plant List 2013
- =Juncus luzuloxiphium Griseb., Pl. Lorentz.: 220. 1874 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus microcephalus var. typicus Buchenau in Abh. Naturwiss. Vereine Bremen 6: 408. 1879 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Juncus microcephalus var. virens Griseb., Symb. Fl. Argent.: 317. 1879 syn. sec. Espejo-Serna & López-Ferrari 2008