Synonymous genera:
- Floydia L. Johnson & B. Briggs (1975)
- Helittophyllum Blume (1826)
- Triunia LA.S.Johnson & B.G. Briggs (1975)
2 1037594 Triunia erythrocarpa ForemanW. Cooper, W.T. Cooper, Fruits Austral. Trop. Rainforest: p. 422, fig. 2 (2004) [W.T. Cooper]
2 1284631 Triunia montana (C.T.White) Foreman [0]W. Cooper, W.T. Cooper, Fruits Austral. Trop. Rainforest: p. 422, fig. 3 (2004) [W.T. Cooper]
2 502793 Helicia blakei ForemanW. Cooper, W.T. Cooper, Fruits Austral. Trop. Rainforest: p. 412 (2004) [W.T. Cooper]
2 502804 Helicia celata ForemanKew Bull., vol. 53(): : p. 673, fig. 2A,B (1998) [R. Wise]
2 502838 Helicia fragilis ForemanKew Bull., vol. 53(): : p. 671, fig. 1A-C (1998) [R. Wise]
2 502847 Helicia grandis HemsleyW.J. Hooker, J.D. Hooker, Icon. Pl., vol. 27 : t. 2631 (1900) [M. Smith]
2 502853 Helicia incisa Koord. & ValetonS.H. Koorders, T. Valeton, Atlas Baumart. Java, vol. 3 : t. 599 (1915) [M. Mangoendimedjo & M. Joedo]
2 502853 Helicia incisa Koord. & ValetonS.H. Koorders, T. Valeton, Atlas Baumart. Java, vol. 3 : t. 600 (1915) [M. Mangoendimedjo]
2 502864 Helicia lanceolata Koord. & ValetonS.H. Koorders, T. Valeton, Atlas Baumart. Java, vol. 3 : t. 598 (1915) [M. Mangoendimedjo]
2 502885 Helicia nortoniana F.M.BaileyW. Cooper, W.T. Cooper, Fruits Austral. Trop. Rainforest: p. 413, fig. 2 (2004) [W.T. Cooper]
2 502922 Helicia robusta (Roxb.) R. Br. ex Blume [80 888625 Roupala robusta Roxb.]Fl. Males., vol. 5 : p. 185, fig. 16 (1955-1958) [R. van Crevel]
2 502922 Helicia robusta (Roxb.) R. Br. ex Blume [80 888625 Roupala robusta Roxb.]R.H. Beddome, Fl. Sylv. S. India, vol. 2 : t. 301 (1874) [Govindoo]
2 502933 Helicia serrata BlumeFl. Males., vol. 5 : p. 176, fig. 15 (1955-1958) [R. van Crevel]
2 502937 Helicia sleumeri ForemanKew Bull., vol. 53(): : p. 671, fig. 1D-G (1998) [R. Wise]
2 502957 Helicia vanroyenii ForemanKew Bull., vol. 53(): : p. 676, fig. 3 (1998) [R. Wise]
2 502959 Helicia versteeghii ForemanKew Bull., vol. 53(): : p. 673, fig. 2C-F (1998) [R. Wise]
44 502885 Helicia nortoniana species F.M.BaileyF.M. Bailey, Compr. Cat. Queensland Pl.: p. 449, fig. 436 (1913) [C.T. White]
5 502922 Helicia robusta (Roxb.) R. Br. ex Blume [116 888625 Roupala robusta Roxb.]W. Roxburgh, Icones Roxburgianae (India): t. 2426 (1780-1815)
5 502922 Helicia robusta (Roxb.) R. Br. ex Blume [116 888625 Roupala robusta Roxb.]R. Wight, , Icon. Pl. Ind. Orient., vol. 1 : t. 191 (1846) [n.a.]
5 502922 Helicia robusta (Roxb.) R. Br. ex Blume [116 888625 Roupala robusta Roxb.]W. Roxburgh, Icones Roxburgianae (Kew): t. 2426 (1780-1815)
6 502806 Helicia ceylanica GardnerH. Trimen, Handb. Fl. Ceylon (Atlas): t. 79 (1893-1898) [G. DeAlwis]
6 502829 Helicia excelsa (Roxb.) Blume [125 888532 Roupala excelsa Roxb.]W. Roxburgh, Icones Roxburgianae (India): t. 2427 (1780-1815)
6 502829 Helicia excelsa (Roxb.) Blume [125 888532 Roupala excelsa Roxb.]R. Wight, , Icon. Pl. Ind. Orient., vol. 1 : t. 190 (1846) [n.a.]
6 502829 Helicia excelsa (Roxb.) Blume [125 888532 Roupala excelsa Roxb.]W. Roxburgh, Icones Roxburgianae (Kew): t. 2427 (1780-1815)
6 502853 Helicia incisa Koord. & ValetonFl. Males., vol. 5 : p. 193, fig. 18 (1955-1958) [R. van Crevel]
6 502882 Helicia moluccana (R. Br.) Blume [125 888578 Roupala moluccana R. Br.]W. Roxburgh, Icones Roxburgianae (India): t. 1119 (1780-1815)
6 502882 Helicia moluccana (R. Br.) Blume [125 888578 Roupala moluccana R. Br.]W. Roxburgh, Icones Roxburgianae (Kew): t. 1119 (1780-1815)
6 502922 Helicia robusta (Roxb.) R. Br. ex Blume [125 888625 Roupala robusta Roxb.]S.H. Koorders, T. Valeton, Atlas Baumart. Java, vol. 3 : t. 597 (1915) [M. Mangoendimedjo & M. Joedo]
6 502922 Helicia robusta (Roxb.) R. Br. ex Blume [125 888625 Roupala robusta Roxb.]J.J. Bennett, T. Horsfield, R. Brown, Pl. Jav. Rar. (Bennett): t. 18 (1838-1852) [n.a.]
