Polypodium penangianum Hook. in Sp. Fil. 5: 52. 1864 Polypodium penangianum Hook. in Sp. Fil. 5: 52. 1864Unknown type category: Dalhousie s.n.Unknown type category: Dalhousie s.n. (K)Taxon for this namePolypodium penangianum Hook. in Sp. Fil. 5: 52. 1864