Species composition of Saxifraga sect. Saxifraga subsect. Arachnoideae (Saxifragaceae) based on DNA sequence evidence

• Michael A. Gerschwitz-Eidt ^[1] ; Joachim W. Kadereit ^[1]
  1. [1] Institut für Organismische und Molekulare Evolutionsbiologie, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany
• Localización: Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, ISSN 0511-9618, ISSN-e 1868-6397, Vol. 50, Nº. 2, 2020, págs. 225-233
• Idioma: inglés
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• Resumen

  • We investigated the species composition of Saxifraga sect. Saxifraga subsect. Arachnoideae, a recently recognized taxon, using DNA sequence data (ITS, trnL–trnF, rpl32–trnL(uag)). We conclude that the subsection contains 12 species, i.e. S. aphylla, S. arachnoidea, S. berica, S. facchinii, S. hohenwartii, S. muscoides, S. paradoxa, S. petraea, S. prenja, S. presolanensis, S. sedoides and S. tenella. Of these, we provide the first molecular evidence for the membership of S. muscoides and S. prenja in S. subsect. Arachnoideae. We provide an extended morphological characterization of the subsection and an identification key to its species.