A Molecular Phylogenetic Study of the Tribe Corallineae (Corallinales, Rhodophyta) with an Assessment of Genus-Level Taxonomic Features and Descriptions of Novel Genera

摘要: A multigene phylogeny using COI-5P (mitochondrial cytochrome c oxidase subunit 1), psbA (PSII reaction center protein D1), and EF2 (elongation factor 2) sequence data for members of the tribe Corallineae was constructed to assess generic boundaries. We determined that traditional reliance on conceptacle position as an indicator affinities in is not supported taxonomic changes are required. found species currently assigned Pseudolithophyllum muricatum resolved within all analyses. This first record crustose subfamily Corallinoideae. Further-more, genus Serraticardia polyphyletic; we propose synonomize with Corallina, transfer type S. maxima Corallina (C. maxima (Yendo) comb. nov.), describe new Johansenia S. macmillanii (J. macmillanii nov.). Our molecular also indicate Marginisporum have evolutionary among these genera should be synonymized. necessitates combinations C. aberrans nov. M. aberrans Johansen & Chihara, C. crassissima M. crassissimum Ganesan, C. declinata M. declinata Ganesan. elongata divergent from other transferred a genus, Ellisolandia (E. elongata (J. Ellis Solander) nov). In addition, internal transcribed spacer (ITS) combined morphological characters were used establish rather than four recognized Canada, there nine.