Sphaerostephanos dimorphus (Brause) Holttum, comb. nov.
- ≡Dryopteris dimorpha Brause in Bot. Jahrb. 56: 100. 1920
- ≡Cyclosorus dimorphus (Brause) Copel. in Philip. J. Sci. 78: 442. 1951
- ≡Thelypteris dimorpha (Brause) Reed in Phytologia 17: 273. 1968
- Unknown type category: Ledermann 12622
- =Dryopteris morobensis Copel. in Univ. Cal. Publ. Bot. 18: 221. 1942
- ≡Cyclosorus morobensis (Copel.) Copel., Gen. Fil.: 143. 1947
- ≡Thelypteris morobensis (Copel.) Reed in Phytologia 17: 294. 1968
- Unknown type category: N.E. New Guinea, Morobe Distr., Finugan, 1400 m, Clemens s.n.