A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis
| العنوان: | A new species of Saussurea (Asteraceae) from Tibet and its systematic position based on ITS sequence analysis |
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| المؤلفون: | Jin-Tang Pan, Jianquan Liu, Yu-Jin Wang, Shang-Wu Liu |
| المصدر: | Botanical Journal of the Linnean Society. 147:349-356 |
| بيانات النشر: | Oxford University Press (OUP), 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Rosette (botany), Monophyly, Achene, biology, Inflorescence, Phylogenetics, Polyphyly, Botany, Plant Science, Asteraceae, biology.organism_classification, Ecology, Evolution, Behavior and Systematics, Saussurea |
| الوصف: | A new species of Saussurea, S. erecta S. W Liu, J. T Pan A J. Q. Liu sp. nov., is described from Tibet. It resembles S. kingii but may be distinguished by having distinct stems and glabrous achenes. Saussurea kingii was placed in sect. Pseudoeriocoryne of subgen. Eriocoryne; this section was circumscribed by acaulescence and an inflorescence with congested capitula surrounded by a rosette of leaves. The discovery of S. erecta with distinct stems, cauline leaves and corymbose capitula blurred the delimitation of sect. Pseudoeriocoryne and suggested that the section may be polyphyletic. Both the close relationship and the significant difference between S. erecta and S. kingii were confirmed by analyses of nrDNA ITS sequences. The resulting phylogenies based on ITS data further suggest that Saussurea sect. Pseudoeriocoryne, as traditionally defined, does not constitute a monophyletic group. The rapid radiation and speciation of Saussurea in the Qinghai-Tibetan Plateau, as inferred from ITS phylogeny, are discussed. (c) 2005 The Linnean Society of London. |
| تدمد: | 1095-8339 0024-4074 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5d9a39c458c300628d0617be62fd50bb https://doi.org/10.1111/j.1095-8339.2005.00350.x |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........5d9a39c458c300628d0617be62fd50bb |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10958339 00244074 |
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