Gymnosiphon divaricatus (Benth.) Benth. & Hook. f., Gen. pl. 3: 458. 1883 sec. Espejo-Serna & López-Ferrari 2008
- =Ptychomeria cornuta Benth. in Hooker's J. Bot. Kew Gard. Misc. 7: 16. 1855 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Ptychomeria divaricata Benth. in Hooker's J. Bot. Kew Gard. Misc. 7: 16. 1855 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Ptychomeria mutica Benth. in Hooker's J. Bot. Kew Gard. Misc. 7: 16. 1855 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Ptychomeria tenella var. minor Benth. in Hooker's J. Bot. Kew Gard. Misc. 7: 17. 1855 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Benitzia poeppigiana Klotzsch ex H. Karst. in Linnaea 28: 421. 1856 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Dictyostega poeppigiana Klotzsch ex H. Karst. in Linnaea 28: 421. 1856 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Gymnosiphon cornutus (Benth.) Benth. & Hook. f., Gen. pl. 3: 458. 1883 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Gymnosiphon arcuatus Urb., Symb. antill. 3: 443. 1903 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Gymnosiphon muticus (Benth.) Urb., Symb. antill. 3: 438. 1903 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Ptychomeria poeppigiana (Klotzsch ex H. Karst.) Schltr. in Repert. Spec. Nov. Regni. Veg. 17: 257. 1921 syn. sec. Espejo-Serna & López-Ferrari 2008
- =Gymnosiphon tuerckheimii Jonker in Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 51: 197-199, f. 17a-f. 1938 syn. sec. Espejo-Serna & López-Ferrari 2008