et al. (2008) described a new species of Rhodophyta,

constituted a new genus, family and order. According to West et al. (2008), Rhodachlya madagascarensis is a small epiphyte growing on ‘Posidonia blades ’ near Ifaty, Mada-gascar (Indian Ocean) (Abstract: p. 203; Material and methods, p. 204; Latin diagnosis, p. 205 and Acknowledge-ments, p. 210). Although they do not mention the authorship of Posidonia, it is clear that they are referring to the plant Posidonia König in König & Sims (1805), not the mollusc Posidonia Bronn 1828, the legitimate name of a genus of bivalves under the International Code of Zoolog-ical Nomenclature, that is widespread in the Carboniferou