Hellwigia papuana Senjaya & A. D. Poulsen 2025, comb. nov.

Hellwigia papuana (Scheff.) Senjaya & A. D. Poulsen comb. nov. Alpinia papuana Scheff., Ann. Jard. Bot. Buitenzorg 1: 56 1876 (Basionym). Alpinia gigantea var. papuana (Scheff.) Valeton in Nova Guinea 8: 943 1913. Type: Indonesia. West Papua: Sorong, J. E. Teijsmann s. n. (Sept 1871) (lectotype: designated by Smith, Notes Roy. Bot. Gard. Edinburgh 34 (2): 161 1975, BO n. v.). Alpinia eustales K. Schum., Bot. Jahrb. Syst. 27: 288 1899. Type: Indonesia. West Papua, O. Beccari 251 (lectotype: designated by Cecchi et al. Plant Biosyst. 156 (3): 783 2022. FI! [FI 008307]) Notes. As no collection of H. papuana is available, A. eustales, placed in synonymy by Smith (1975), remains tentative. We disagree with Schumann (1904) in placing A. collosea as a synonym of A. papuana; instead, here we place it in synonymy with H. nutans.