Journal of Species Research

The National Institute of Biological Resources (국립생물자원관)
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Selaginella austrotibetica (Selaginellaceae), a new spikemoss from Xizang, China

  • Meng-Hua Zhang (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences(CAS)) ;
  • Jie Yang (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences(CAS)) ;
  • Aleksandr Petrovich Shalimov (Altai State University) ;
  • Jong-Soo Kang (Department of Agriculture, Forestry and Bioresources, Plant Genomics & Breeding Institute, College of Agriculture & Life Sciences, Seoul National University) ;
  • Xian-Chun Zhang (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences(CAS))
  • Received : 2023.03.31
  • Accepted : 2023.12.26
  • Published : 2024.02.28
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Abstract

Selaginella austrotibetica, a new spikemoss species from China, is described. The species is epipetric and was found on a moss-covered rocky cliff by a riverbank. Morphologically, it is unlike any anisosporophyllous species in the genus Selaginella. However, it resembles species of the S. sanguinolenta group, especially similar to S. sajanensis in gross morphology, except for the characters of strobilus. The molecular phylogenetic analysis clearly showed that S. austrotibetica was nested within the anisosporophyllous species clade, forming a sister relationship with the clade of S. vaginata and S. xipholepis, and distinct from the S. sanguinolenta group, including S. sajanensis. Although S. austrotibetica is sister to the clade of S. vaginata and S. xipholepis, the species can be clearly distinguished by its sparse leaves on branches, dorsal leaves that are broad-ovate, base obtuse to rounded, margin denticulate or very shortly sparsely ciliolate, and leaves that are slightly thick and shiny. Therefore, we described Selaginella austrotibetica as a new species and discuss its phylogenetic relationships within the genus Selaginella.

Keywords

Acknowledgement

This study was supported by the National Natural Science Foundation of China (NSFC, No. 32170233), National Plant Specimen Resource Center (NPSRC, No. E0117G1001), and Scientific Research Fund of Hunan Provincial Education Department(No. 22C0285).

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