New species or infraspecific variation? A case study of Ptychanthus striatus var. motuoensis var. nov. (Marchantiophyta: Lejeuneaceae) from Xizang, China
| Autor: | Zun Dai, Xing Chen, Jian Wang, S. Robbert Gradstein, Shi-Chen Xing, Rui-Liang Zhu |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
biology Phylogenetic tree Plant Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Phylogenetics Genus Botany Marchantiophyta Ptychanthus Perianth Ecology Evolution Behavior and Systematics Lejeuneaceae Ptychanthus striatus 010606 plant biology & botany |
| Zdroj: | The Bryologist. 124 |
| ISSN: | 0007-2745 |
| DOI: | 10.1639/0007-2745-124.4.475 |
| Popis: | An unusual specimen of the genus Ptychanthus (Lejeuneaceae) was collected in Xizang, differing from the common P. striatus in the perianth, having only five, wing-like keels (one dorsal, two lateral and two ventral), the lateral and ventral keels being sharper than the dorsal one. Molecular-phylogenetic analysis of chloroplast and nuclear DNA sequences showed that the plant was deeply nested within P. striatus. As the differences in perianth structure could not be attributed to plasticity, we interpret the phylogenetic position of the plant as the result of a recent speciation process and describe it as a new variety, P. striatus var. motuoensis. |
| Databáze: | OpenAIRE |
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