Malaxis soulei L.O. Williams in Ann. Missouri Bot. Gard. 21(2): 343. 1934 sec. Soto-Arenas & al. 2007
- =Microstylis montana Engelm. ex Rothr. in Rep. U.S. Geogr. Surv., Wheeler 6: 264. 1878 syn. sec. Bogarín & al. 2014
- =Malaxis densiflora (A. Rich.) Kuntze, Revis. Gen. Pl. 2: 673. 1891 syn. sec. Solano Gómez & al. 2020
- =Malaxis montana (Rothr.) Kuntze, Revis. gen. pl. 2: 673. 1891 syn. sec. Bogarín & al. 2014