Blechnum fluviatile Isolectotype: 1804, R. Brown s.n. (BM) Lectotype: 1804, R. Brown s.n. (BM) 1804, R. Brown s.n. (K) 1804, R. Brown s.n. 1804, R. Brown s.n. West ex Law & Somner s.n. West ex Law & Somner s.n. (K) Raoul s.n. Raoul s.n. Isotype: Dutch New Guinea, Mt Wilhelm, 7 km NE Wilhelmina top, sides of moist sinkholes and chasms in limestone, 3560 m, L.J. Brass & E. Meijer Drees 9966 (L) Holotype: Dutch New Guinea, Mt Wilhelm, 7 km NE Wilhelmina top, sides of moist sinkholes and chasms in limestone, 3560 m, L.J. Brass & E. Meijer Drees 9966 (MICH) Holotype: dense humid woods near Waikare Lake in decomposed sandstone soil, Dec 1841, W. Colenso s.n. (WELT) dense humid woods near Waikare Lake in decomposed sandstone soil, Dec 1841, W. Colenso s.n.