Blechnum hieronymi Brause in Bot. Jahrb. Syst. 56: 155. 1921
Holotype: ‘Nordöstl.-Neu-Guinea, Kaiserin-Augusta-Fluß-(Sepik-)Gebiet, Schraderberg, Gebirgswald’, epiphytic, 2000 m, Jun 1913, Ledermann 12217b (B)
- =Blechnum decorum Brause in Bot. Jahrb. Syst. 56: 156. 1921
‘Nordöstl.-Neu-Guinea, Kaiserin-Augusta-Fluß-(Sepik-)Gebiet, Felsspitze (Sepik region)’, 1400-1500 m, Aug 1913, Ledermann 12459a (; holotype: B; isotype: BM)
- =Lomaria acutiuscula Alderw. in Nova Guinea 14: 31. 1924
- ≡Blechnum acutiusculum (Alderw.) C.Chr., Index Filic.: 45. 1934
Unknown type category: mountain ridge near Doorman Summit, epiphytic, 1420 m, Oct 1920, Lam 1543 ()
- =Blechnum brassii Copel. in Univ. Calif. Pub. Bot. 18: 222. 1942
Netherlands New Guinea, Bernhard Camp, Idenburg River, epiphytic in mossy forest; one plant climbing on dead trunk at 1800 m, Jan 1939, L.J. Brass 12287 (,; holotype: MICH; isotype: L)
