Melodinus acutiflorus Holotype: Australia, Brisbane River., Hill 27 (MEL) Isotype: Australia, Brisbane River., Hill 27 (K) Carr 14364 (SING) Carr 14364 Lectotype: Carr 14364 (L) Carr 14364 (K) Carr 14364 (NY) Isotype: Carr 14364 (A) Papua New Guinea, Morobe Province, Wantaal, Clemens 41192 (US) Holotype: Papua New Guinea, Morobe Province, Wantaal, Clemens 41192 (A) Isotype: Papua New Guinea, Morobe Province, Wantaal, Clemens 41192 (E) Papua New Guinea, Morobe Province, Wantaal, Clemens 41192 (MICH) Papua New Guinea, Morobe Province, Wantaal, Clemens 41192 (UC)