Aenigmopteris dubia (Copel.) Holttum in Blumea 30: f. a, pl. 1a. 1984
- ≡Dryopteris dubia Copel. in Leafl. Philipp. Bot. 1: 235. 1907
- ≡Ctenitis dubia (Copel.) Copel., Gen. Fil.: 124. 1947
- Isotype: Elmer 9016 (BO)
- Type: Elmer 9016 (K)
- Type: Elmer 9016 (L)
- Type: Elmer 9016 (MICH)