Dictyota rotundata Lamouroux, 1809a: 43 (type locality: Mediterranean Sea [African coast fide Lamouroux, 1809b]).—Kützing, 1849: 557.— De Toni, 1895b: 282.
Dictyota rotunda C. Agardh, 1820a: 140.
Note: C. Agardh (l.c.), in quoting Lamouroux's description of Dictyota rotundata, changed the epithet to rotunda. The original spelling is retained in the index on page 488, indicating that the change was inadvertent. His citation of "india Orientali'' was a clerical error, this provenance belonging to the succeeding species, D. lata Lamouroux (page 594 of this catalogue).