In:
PhytoKeys, Pensoft Publishers, Vol. 138 ( 2020-01-10), p. 3-15
Abstract:
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 & amp; 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 & amp; 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.
Type of Medium:
Online Resource
ISSN:
1314-2003
,
1314-2011
DOI:
10.3897/phytokeys.138.38674
DOI:
10.3897/phytokeys.138.38674.figure1
DOI:
10.3897/phytokeys.138.38674.figure2
DOI:
10.3897/phytokeys.138.38674.figure3
DOI:
10.3897/phytokeys.138.38674.figure4
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2020
detail.hit.zdb_id:
2579891-1
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