Evidence for the proposed merger of Pseudobryopsis papillata with Pseudobryopsis myura (Bryopsidaceae, Chlorophyta).

Evidence is presented that the marine macroalga Pseudobryopsis papillata Nasr (Bryopsidaceae, Chlorophyta), described by Nasr in 1944 from the Red Sea, is conspecific with the Mediterranean generitype Pseudobryopsis myura (J. Agardh) Berthold in Oltmanns. Although Ps. myura was originally depicted as having non-papillate gametangia, recent and past collections of this species in the Mediterranean clearly show papillate gametangia, thus erasing the primary reason for distinguishing it from Red Sea populations. In addition, similar branch patterns and thallus lengths support the synonymization of these two species. [ABSTRACT FROM AUTHOR]