Academic editor: M. Moeller
Xin Z-B, Fu L-F, Maciejewski S, Huang Z-J, Do TV, Wen F (2021)
The genus
During a joint Sino-Vietnamese botanical survey for plant biodiversity in northern Vietnam in late October 2019, we collected an unknown
Herbarium materials were studied from the following herbaria: E, IBK, US and VNMN (herbarium acronyms according to Index Herbariorum;
These morphological characters of newly-proposed species were compared with those of the two known
Leaves were dried using silica gel for DNA extraction (
Species names, voucher specimens, and GenBank accession numbers of DNA sequences used in this study.
Species name | Voucher number | Herbarium | Origin |
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M. Möller and Y.G. Wei MMO 05-755 | E, IBK | China, Guangxi, Longzhou county |
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W. B. Xu s.n. [XWB] | IBK | China, unknown locality |
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M. Möller and Y.G. Wei MMO 06-908 | E, IBK | China, Guangxi, He Zhou city |
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M. Möller and Y.G. Wei MMO 06-798 | E, IBK | China, Guangxi, Mashan county |
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M. Möller and Y.G. Wei MMO 05-751 | E, IBK | China, Guangxi, Jingxi county |
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Y.G. Wei 709 | IBK | China, Guangxi, Napo county |
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Kew/Edinburgh Kanchenjunga Expedition (1989) 940 [Cult. RBGE 19892473A] | E | Nepal, Yamphudin |
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D.J. Middleton 5220 and M. Newman et al. LAO1428 | E | Laos, Khammouan, Nakai Nam Theun |
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D.J. Middleton et al. 5632 | E | Thailand, Nakhon Nayok, Khao Yai NP |
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D.J. Middleton et al. 5652 | E | Thailand, Nakhon Nayok, Khao Yai NP |
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F. Wen, T.V. Do, Z.B. Xin & S. Maciejewski, VMN-CN1214 | IBK, VNMN | Vietnam, Son La, Moc Chau | |||
Voucher from Cult. RBGE 19715592 | E | unknown origin |
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Smithsonian Institute 78-057 [Cult. RBGE 19933232] | E, US | China, N Yunnan |
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Q.J. Xie and C.X. Ye s.n. [Cult. RBGE 19951540] | E | E China, Guangdong, Lian Rive |
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L. Averyanov 1987 [Cult. RBGE 19941913] | E | Vietnam, Hong Quang Special Region, Cat Hai |
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Note: newly generated sequences indicated by an asterisk (*).
The sequence data were edited and assembled using Lasergene Navigator 7.1 (DNAstar, Madison, Wisconsin, USA). Two datasets (
The combined
Phylogenetic tree of
The new species can be easily distinguished from the known
Vietnam. Son La Province: Moc Chau District, Xuan Nha Nature Reserve,
Herbs perennial, rhizomatous prostrate thickened stem.
Flowering occurs from October to December and fruiting from November to January.
The specific epithet “
Three species of
1 | Leaf blade peltate, apex rounded, margin entire |
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– | Leaf blade not peltate, apex acuminate, margin minutely dentate |
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2 | Calyx lobes 7–15 mm wide, corolla tube white ventrally |
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– | Calyx lobes 0.9–4.2 mm wide, corolla tube purple ventrally |
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From the viewpoint of morphology, the newly-described species should be treated as a species of
Morphological comparison of
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peltate, 1.2–1.3 times as long as wide, apex rounded, margin entire | palaceous, 1.5–1.9 times as long as wide, apex shortly acuminate, margin minutely dentate | palaceous, 1.8–5.6 times as long as wide, apex acuminate, margin minutely dentate |
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3, narrow ovate, 5–6 mm wide, apex rounded, margin entire | 2, ovate, 19 mm wide, apex acuminate, margin dentate | 2, narrowly elliptic to lanceolate, somewhat falcate, 1.8–8 mm wide, apex acuminate, margin entire |
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25–35 mm long | 12–15 mm long | 6.5–11 mm long |
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4–6 mm wide, inside glabrous, margin entire | 7–15 mm wide, inside with white appressed hairs in the upper half, margin coarsely dentate | 0.9–4.2 mm wide, inside densely pubescent, margin slightly toothed or appearing as large sessile glands on margin |
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outside dark purple throughout, lobes margin entire | outside white ventrally, lobes being minutely dentate along the margin | outside deep purple throughout, lobes margin entire |
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2.5–4 mm long | 5.5–11 mm long | 4–5 mm long |
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ca. 3 mm high | ca. 1.5 mm high | 0.9–1.4 mm high |
In the present study, we discovered and described a new species of
We want to thank the staff from Xuan Nha Nature Reserve for guiding our investigation and collecting the specimens. We also want to thank Michael LoFurno, Adjunct Professor, Temple University, Philadelphia, USA, for his editorial assistance. This study was financially supported by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) (106.03-2019.308), the Foundation of Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain (19-050-6; 19-185-7), the National Natural Science Foundation (31860047), Guilin Science and Technology Foundation (20180107-6), the Key Science and Technology Research and Development Project of Guangxi (Guike AD20159091), Guangxi Natural Science Foundation (2020GXNSFBA297049), Basal Research Fund of GXIB (Guizhiye20009) and the 21st Talent project of “Ten-Hundred-Thousand” in Guangxi.
Log file
phylogenetic