Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand
We herein describe a new species, Panax siamensis J. Wen, from the tropical monsoon forests in northern Thailand. Panax siamensis is characterized by a combination of characters including horizontally elongated rhizomes with thick internodes, 3–5 whorled leaves each with 7–9 sessile and lanceolate l...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2023-10-01
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| Series: | PhytoKeys |
| Online Access: | https://phytokeys.pensoft.net/article/106289/download/pdf/ |
| _version_ | 1797663595248484352 |
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| author | Jun Wen Gary Krupnick Hans-Joachim Esser |
| author_facet | Jun Wen Gary Krupnick Hans-Joachim Esser |
| author_sort | Jun Wen |
| collection | DOAJ |
| description | We herein describe a new species, Panax siamensis J. Wen, from the tropical monsoon forests in northern Thailand. Panax siamensis is characterized by a combination of characters including horizontally elongated rhizomes with thick internodes, 3–5 whorled leaves each with 7–9 sessile and lanceolate leaflets, lanceolate bracteoles not persisting at the fruiting stage, 2-locular ovaries, and red fruits with a black top. The new species is most closely related to Panax zingiberensis C.Y. Wu & Feng from southeastern Yunnan province of China, sharing the character of sessile leaflets, but differing in that P. siamensis has well developed, elongated rhizomes (vs. compact, ginger-like rhizomes and rootstock in P. zingiberensis), and 7–9 leaflets (vs. (3–) 5–7 leaflets in P. zingiberensis). We also compare Panax siamensis to other related Asian Panax species, including P. assamicus Banerjee, P. bipinnatifidus Seem., P. pseudoginseng Wallich, and P. vietnamensis Ha & Grushv. The new taxon is preliminarily assessed as Vulnerable (VU D2), according to the IUCN Red List criteria. A taxonomic key is provided to facilitate the identification of P. siamensis and its close allies. |
| first_indexed | 2024-03-11T19:16:56Z |
| format | Article |
| id | doaj.art-3b53170221e54b9183842ce9a6642b55 |
| institution | Directory Open Access Journal |
| issn | 1314-2003 |
| language | English |
| last_indexed | 2024-03-11T19:16:56Z |
| publishDate | 2023-10-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | PhytoKeys |
| spelling | doaj.art-3b53170221e54b9183842ce9a6642b552023-10-08T08:11:05ZengPensoft PublishersPhytoKeys1314-20032023-10-01234515910.3897/phytokeys.234.106289106289Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern ThailandJun Wen0Gary Krupnick1Hans-Joachim Esser2Department of Botany, National Museum of Natural History, Smithsonian InstitutionDepartment of Botany, National Museum of Natural History, Smithsonian InstitutionBotanische Staatssammlung München, Staatliche Naturwissenschaftliche Sammlungen Bayerns (SNSB)We herein describe a new species, Panax siamensis J. Wen, from the tropical monsoon forests in northern Thailand. Panax siamensis is characterized by a combination of characters including horizontally elongated rhizomes with thick internodes, 3–5 whorled leaves each with 7–9 sessile and lanceolate leaflets, lanceolate bracteoles not persisting at the fruiting stage, 2-locular ovaries, and red fruits with a black top. The new species is most closely related to Panax zingiberensis C.Y. Wu & Feng from southeastern Yunnan province of China, sharing the character of sessile leaflets, but differing in that P. siamensis has well developed, elongated rhizomes (vs. compact, ginger-like rhizomes and rootstock in P. zingiberensis), and 7–9 leaflets (vs. (3–) 5–7 leaflets in P. zingiberensis). We also compare Panax siamensis to other related Asian Panax species, including P. assamicus Banerjee, P. bipinnatifidus Seem., P. pseudoginseng Wallich, and P. vietnamensis Ha & Grushv. The new taxon is preliminarily assessed as Vulnerable (VU D2), according to the IUCN Red List criteria. A taxonomic key is provided to facilitate the identification of P. siamensis and its close allies.https://phytokeys.pensoft.net/article/106289/download/pdf/ |
| spellingShingle | Jun Wen Gary Krupnick Hans-Joachim Esser Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand PhytoKeys |
| title | Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand |
| title_full | Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand |
| title_fullStr | Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand |
| title_full_unstemmed | Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand |
| title_short | Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand |
| title_sort | panax siamensis j wen a new species of the ginseng genus panax araliaceae from northern thailand |
| url | https://phytokeys.pensoft.net/article/106289/download/pdf/ |
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