Dichocarpum hagiangense -a new species and an updated checklist of Ranunculaceae in Vietnam.
| Autor: | Nguyen MT; Institute of Applied Technology, Thu Dau Mot University, Thu Dau Mot, Vietnam., Trinh NB; Department of Silviculture foundation and Forest Phytodiversity, Silviculture Research Institute, Vietnamese Academy of Forest Sciences, Ha Noi City, Vietnam., Tran TTV; Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Ha Noi, Vietnam., Thanh TD; Southern Center of Application for Forest Technology & Science, Forest Science Institute of South Vietnam, Thu Dau Mot, Vietnam., Phan LK; Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Ha Noi, Vietnam., Pham VT; Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh, Vietnam.; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh, Vietnam. |
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| Jazyk: | angličtina |
| Zdroj: | PeerJ [PeerJ] 2020 Sep 22; Vol. 8, pp. e9874. Date of Electronic Publication: 2020 Sep 22 (Print Publication: 2020). |
| DOI: | 10.7717/peerj.9874 |
| Abstrakt: | Dichocarpum hagiangense from Ha Giang province, northern Vietnam is described and illustrated. Diagnostic features of the new species are a short rhizomatous stem, (2-)3-foliolate or simple leaves, and pink-purple flowers. The described species is distinct from closely allied D. trifoliolatum in having longer sepals, shape and obcordate apex of petal limbs, shorter flower stem, number and tooth shape of basal leaves; it differs from D. basilare and D. carinatum in having stem leaf, retuse apex and longer of central leaflet, number and (2-)3-foliated (or simple) of leaf. With the support of molecular data, the new species was clearly distinguished from other species in the Dichocarpum group by eight autapomorphic characters in nrITS sequence. A key to all species of Dichocarpum is provided. We suggest the IUCN conservation status of D. hagiangense to be "Critically Endangered". A newest checklist of the family Ranunculaceae in Vietnam is updated. Competing Interests: The authors declare there are no competing interests. (©2020 Nguyen et al.) |
| Databáze: | MEDLINE |
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