IRMNG Taxon list
Acrosymphyton brainardii P.S. Vroom & I.A. Abbott, 2004
Acrosymphyton caribaeum (J.G. Agardh) Sjöstedt, 1926
Acrosymphyton firmum M.W. Hawkes, 1982
Acrosymphyton purpuriferum (J.G. Agardh) Sjöstedt, 1926
Acrosymphyton taylorii I.A. Abbott, 1962
Acrosymphyton tenax A.J.K. Millar & Kraft, 1984
Acrosymphytonema breemaniae C.F. Boudouresque, M. Perret-Boudouresque & M. Knoepffler-Peguy
Helminthiopsis purpurifera (J.G. Agardh) Papenfuss, 1958 accepted as Acrosymphyton purpuriferum (J.G. Agardh) Sjöstedt, 1926
Helminthiopsis rosea J.G. Agardh, 1899 accepted as Gloiophloea rosea (J.G. Agardh) Huisman & Womersley, 1994
Helminthiopsis verticillifera J.G. Agardh, 1899 accepted as Calosiphonia verticillifera (J.G. Agardh) Setchell, 1912