Three new fossil records of Equisetum (Equisetaceae) from the Neogene of south-western China and northern Vietnam
| Autor: | Aye Thida Aung, Jian Huang, Truong Van Do, Ai Song, Jia Liu, Zhe-Kun Zhou, Tao Su |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | PhytoKeys, Vol 138, Iss , Pp 3-15 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1314-2003 1314-2011 95476687 |
| DOI: | 10.3897/phytokeys.138.38674 |
| Popis: | Three fossil species of Equisetum (Equisetaceae) were reported from the Neogene of south-western China and northern Vietnam, based on well-preserved rhizomes with tubers. Equisetum cf. pratense Ehrhart from the middle Miocene of Zhenyuan County, Yunnan Province, China is characterised by a bunch of three ovate tubers with longitudinal ridges on the surface. Equisetum yenbaiense A.T. Aung, T. Su, T.V. Do & Z.K. Zhou, sp. nov. from the late Miocene of Yenbai Province, Vietnam is characterised by four bunches of elongate tubers arranged in a whorl on a node. Equisetum yongpingense A.T. Aung, T. Su & Z.K. Zhou, sp. nov. from the late Pliocene of Yunnan is characterised by fibrous roots on most nodes and two to four bunches of large cylindrical tubers arranged in a whorl on a node. Floristic assemblages suggest that these species might have grown near a riverside or lakeshore. These new fossil records improve our understanding of species richness of Equisetum and their distribution range during the Neogene in Asia. |
| Databáze: | Directory of Open Access Journals |
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