Malaxis excavata (Lindl.) Kuntze, Revis. Gen. Pl. 2: 673. 1891 sec. Soto-Arenas & al. 2007
- ≡Microstylis excavata Lindl. in Edwards's Bot. Reg. 24: Misc. 51. 1838 syn. sec. Solano Gómez & al. 2020
- =Microstylis hastilabia Rchb. f. in Beitr. Orchid.-K. C. Amer.: 101. 1866 syn. sec. Solano Gómez & al. 2020
- =Microstylis simillima Rchb. f. in Beitr. Orchid.-K. C. Amer.: 101. 1866 syn. sec. Solano Gómez & al. 2020
- =Cheiropterocephalus sertuliferus Barb. Rodr., Gen. Sp. Orchid. 1: 29. 1877 syn. sec. Solano Gómez & al. 2020
- =Microstylis caracasana Klotzsch ex Ridl. in J. Linn. Soc., Bot. 24: 325. 1887 syn. sec. Solano Gómez & al. 2020
- =Malaxis caracasana (Klotzsch ex Ridl.) Kuntze, Revis. Gen. Pl. 2: 673. 1891 syn. sec. Solano Gómez & al. 2020
- =Malaxis hastilabia (Rchb. f.) Kuntze, Revis. Gen. Pl. 2: 673. 1891 syn. sec. Solano Gómez & al. 2020
- =Malaxis simillima (Rchb. f.) Kuntze, Revis. Gen. Pl. 2: 673. 1891 syn. sec. Solano Gómez & al. 2020
- =Microstylis quadrangularis Cogn., Fl. Bras. 3(6): 551, pl. 114. 1906 syn. sec. Solano Gómez & al. 2020
- =Microstylis spiralipetala Cogn. in Bull. Soc. Roy. Bot. Belgique 43: 302. 1907 syn. sec. Solano Gómez & al. 2020
- =Microstylis carpinterae Schltr. in Beih. Bot. Centralbl. Abt. 2, 36(2): 381. 1918 syn. sec. Solano Gómez & al. 2020
- =Microstylis paranaensis Schltr. in Repert. Spec. Nov. Regni Veg. 16: 330. 1920 syn. sec. Solano Gómez & al. 2020
- =Microstylis muelleri Schltr. in Repert. Spec. Nov. Regni Veg. 17: 12. 1921 syn. sec. Solano Gómez & al. 2020
- =Malaxis carpinterae (Schltr.) Ames, Orchidaceae 7: 157. 1922 syn. sec. Solano Gómez & al. 2020
- =Microstylis ottonis Schltr. in Repert. Spec. Nov. Regni Veg. Beih. 10: 39. 1922 syn. sec. Solano Gómez & al. 2020
- =Malaxis maxonii Ames in Schedul. Orchid. 6: 36-38. 1923 syn. sec. Soto-Arenas & al. 2007
- =Microstylis sertulifera (Barb. Rodr.) Schltr. in Repert. Spec. Nov. Regni Veg. Beih. 35: 46. 1925 syn. sec. Solano Gómez & al. 2020
- =Malaxis uncinata Ames & C. Schweinf. in Schedul. Orchid. 10: 15-17. 1930 syn. sec. Solano Gómez & al. 2020
- =Malaxis maguirei C. Schweinf. in Bull. Torrey Bot. Club 75: 217. 1948 syn. sec. Solano Gómez & al. 2020