Taxonomy of a poorly documented alga, Neosiphonia savatieri (Rhodomelaceae, Rhodophyta) from Korea
Kim, Myung; Sook,
Neosiphonia is a rhodomelacean red algal genus comprising 13 species which was recently segregated from Polysiphonia. There remain, however, some poorly known species. This study reports on the vegetative and reproductive morphology of N. savatieri based on type material from the Natural History Museum, Paris (PC) and recent collections from Korea. A lectotype is designated here for N. savatieri collected by Hariot at Yokoska, Japan. Thalli consist of erect ecorticate axes with four pericentral cells, attached by unicellular rhizoids separated by a cross wall from the pericentral cells. Branch initials are formed from each axial cell in the spiral pattern. Spermatangial branch initials are produced on the primary branches of the trichoblasts. The procarps have a three-celled carpogonial branch and tetrasporangia are formed from the second pericentral cell in spiral series. The development of the reproductive structures of N. savatieri is described for the first time and conforms to the description of the genus Neosiphonia. In comparing several taxonomic characteristics among related species, in particular N. japonica, it is concluded that N. savatieri is a morphologically distinct species.