Molecular evidence for Chondrophycus poiteaui var. gemmiferus comb. et stat. nov. (Ceramiales, Rhodophyta) from the Mexican Caribbean Sea: implications for the taxonomy of the Laurencia complex - Díaz-Larrea, Jhoana; Sentíes, Abel; Fujii, Mutue Toyota; Pedroche, Francisco F; Oliveira, Mariana C (Botanica Marina, 2007)