“…Morphological variation of L. dendroidea with regard to the basal system, the presence or absence of lenticular thickenings, and the degree of projection of the cortical cell walls, and also differences in habitat, have misled previous research and led to incorrect citation of this taxon under different names for the Brazilian coast, such as L. arbuscula (Cordeiro-Marino et al, 1983), L. composita (Oliveira Filho, 1969), L. filiformis f. filiformis, L. filiformis f. heteroclada, L. filiformis f. dendritica (Fujii & Sentı´es, 2005), L. majuscula (Sze´chy & Nassar, 2005), L. microcladia (Joly, 1965;Cordeiro-Marino, 1978;Pinheiro-Joventino et al, 1998;Figueiredo et al, 2004) and L. obtusa (Joly, 1965;Pedrini, 1980;Yoneshigue, 1985;FigueiredoCreed & Yoneshigue-Valentin, 1997). In our study, specimens with the characteristics of these other taxa showed morphological features that can be related to environmental conditions.…”