Conferva fucoides Hudson, 1762: 485 (type locality: York, England; neotype fide Maggs & Hommersand, 1993: 338).
Polysiphonia fucoides (Hudson) Greville in W. Hooker, 1833: 332.
Taxonomic synonym:
Conferva nigrescens Hudson, 1778: 602 (syntype localities: England: St. Ives, Cornwall and Exmouth, Devon).
Polysiphonia nigrescens (Hudson) Greville in W. Hooker, 1833: 332.—Børgesen, 1954a: 43–46, figs. 19–20.
INDIAN OCEAN DISTRIBUTION: Mauritius.
Note: The synonymy was proposed by Maggs & Hommersand (1993: 338).