CIRCUMSCRIPTION AND PHYLOGENETIC RELATIONSHIPS OF GYMNOCARPOS (CARYOPHYLLACEAE-PARONYCHIOIDEAE)
Open Access
- 19 June 2002
- journal article
- research article
- Published by Royal Botanic Garden Edinburgh in Edinburgh Journal of Botany
- Vol. 59 (2) , 221-237
- https://doi.org/10.1017/s0960428602000045
Abstract
A molecular phylogenetic study based on nuclear ribosomal internal transcribed spacer sequences and plastid rps16 intron sequences on the status of the genus Gymnocarpos (Paronychioideae, Caryophyllaceae) is presented. Gymnocarpos decandrus and Sclerocephalus arabicus form a strongly supported clade within a well-supported group consisting also of G. przewalskii, and the rest of Gymnocarpos. Re-examination of morphological characters also supports this conclusion. Paronychia is found to be polyphyletic, with the subgenera Paronychia and Siphonychia forming a strongly supported sister group to Gymnocarpos, whereas P. kapela and P. chlorothyrsa (representing subgen. Anoplonychia) are found to be related to Herniaria and Philippiella. A key to the 10 species recognized in Gymnocarpos is presented, as well as synoptical information on nomenclature and distributions.Keywords
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