The tetrasporophytes of Polysiphonia banyulensis Coppejans collected in Corsica correspond exactly to those collected at Banyuls (Pyr.-Or., France), in that these also have 5 pericentral cells. The presence of 4 pericentral cells, mentioned in the original description is only correct for a part of the holotype. Thus P. banyulensis belongs to the section Polysiphonia.The female gametophytes, collected in July 1977 at Calvi (Corsica) are smaller and present numerous short-stalked spherical cystocarps without special cells around the ostiole. The other characters of the species (typical aspect of trichoblasts, presence of 5 pericentral cells, total absence of cortication) are also present.
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