Morphological study of the genus Herposiphonia (Rhodophyta, Rhodomelaceae) on the coast of eastern Guangdong, China, with a description of H-pinnata sp nov.

作者：Ding Lanping; Tan Huaqiang; Zhang Quanliang; Zeng Lingzhao; Huang Bingxin^*

来源：Chinese Journal of Oceanology and Limnology, 2016, 34(2): 271-282.

DOI：10.1007/s00343-015-4339-8

• new species
• morphological taxonomy
• Guangdong Province
• biogeography distribution

We present a taxonomic study of taxa of the red algae genus Herposiphonia (Rhodophyta, Rhodomelaceae), collected from the coast of eastern Guangdong, China. We made detailed morphological studies and considered recent taxonomic criteria for species delimitation, and are making the first report of five different species on the coast of Guangdong, including a new species. The species identified were H. caespitosa Tseng, H. hollenbergii Dawson, H. pecten - veneris (Harvey) Falkenberg, H. subdisticha Okamura and H. pinnata Ding and Tan sp. nov. H. pinnata sp. nov. is characterized by bright green thalli; most parts of the feathery thalli are free of the substratum; determinate branches and indeterminate branches are arranged in a chaotic sequence; the primary axis has bare segments; the determinate branch has 9-11 periaxial cells per segment; vegetative trichoblasts are abundant; and tetrasporangia are formed on the middle of the determinate branch with 1-8 successive segments in a single rectilinear series. This paper is also the first record of sporophyte plants of H. pecten-veneris.

• 出版日期2016-3
• 单位汕头大学; 天津师范大学