Jerarquía taxonómica:
Rhodomelaceae → Osmundaria obtusiloba (C. Agardh) R.E. Norris, 1991

Familia:
Rhodomelaceae

Autor:
(C. Agardh) R.E. Norris, 1991

Sinónimos:
Vidalia obtusiloba (C. Agardh) J. Agardh, 1863
Amansia obtusiloba (C. Agardh) J. Agardh, 1841