Three new species of Liparis s.l. (Orchidaceae: Malaxideae) from Southwest China based on morphological characters and phylogenetic evidence

doi:10.1016/j.pld.2021.01.006

Plant Diversity ›› 2021, Vol. 43 ›› Issue (05): 401-408.DOI: 10.1016/j.pld.2021.01.006

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Three new species of Liparis s.l. (Orchidaceae: Malaxideae) from Southwest China based on morphological characters and phylogenetic evidence

Ji-Dong Ya^a, Dong-Liang Lin^b, Zhou-Dong Han^c,d, Lei Cai^e, Zhi-Rong Zhang^a, De-Ming He^f, Xiao-Hua Jin^b,i, Wen-Bin Yu^g,h,i

a Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132, Heilongtan, Kunming, Yunnan, 650201, China;
b State Key Laboratory of Systematic and Evolutionary Botany and Herbarium, Institute of Botany, Chinese Academy of Sciences, Nanxincun20, Xiangshan, Beijing, 100093, China;
c CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;
d University of Chinese Academy of Sciences, Beijing, 100049, China;
e Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132, Heilongtan, Kunming, Yunnan, 650201, China;
f Wenshan National Nature Reserve Administration, Wenshan, Yunnan, 663000, China;
g Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Mengla, Yunnan, 666303, China;
h Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China;
i Southeast Asia Biodiversity Research Institute, Chinese Academy of Science, Yezin, Nay Pyi Taw, 05282, Myanmar

Received:2020-10-28 Revised:2021-01-05 Online:2021-10-25 Published:2021-11-18
Contact: Xiao-Hua Jin, Wen-Bin Yu
Supported by:
This study was financially supported by National Forestry and Grassland Administration (2019073019,2019073003,2019073002), National Science & Technology Infrastructure, the Large-scale Scientific Facilities of the Chinese Academy of Sciences (2017-LSFGBOWS-02), Science and Technology Basic Resources Investigation Program of China "Survey and Germplasm Conservation of Plant Species with Extremely Small Populations in South-west China" (2017FY100100), grants from Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Grant No. Y4ZK111B01), the National Natural Science Foundation of China (Grant Nos. 31670194, 31870195), the Special Investigation on Vulnerable Habitat Plants in Daweishan Area, Yunnan, China (2018-2021), and the CAS 135 Program (2017XTBG-T03). Yun-Xi Zhu is thanked for is outstanding illustrations.

Abstract

Abstract: Liparis aureolabella and L. mengziensis, two new species from the karst region of southwestern China, and L. bingzhongluoensis, a new species from montane region in Yunnan, are described and illustrated. L. aureolabella is easily distinguished from its relatives by having abaxially purple leave with purple reticulate veins prominent adaxially, a lip auriculate at base, and falcate-lanceolate pollinia. Liparis mengziensis is closely related to L. petiolata and L. auriculata, but differs from them by having an ovate to broadly ovate leaf, purple lip and apex connate along the margins. Liparis bingzhongluoensis is similar to Liparis nanlingensis, but the new species is characterized by having a lip with two transparent ridges on its disc, longitudinally concave basal callus and triangular column wings. Phylogenetic analyses based on nuclear ribosomal ITS and plastid matK sequences showed that L. aureolabella and L. mengziensis are nested with L. petiolata or L. auriculata in a monophyletic clade. L. bingzhongluoensis is sister to a clade formed by L. nanlingensis, L. tsii, L. sasakii and L. krameri. Moreover, morphological comparisons strongly support that the three species as separated species newly to science.

Key words: Liparis, Orchidaceae, Taxonomy, Yunnan

Ji-Dong Ya, Dong-Liang Lin, Zhou-Dong Han, Lei Cai, Zhi-Rong Zhang, De-Ming He, Xiao-Hua Jin, Wen-Bin Yu. Three new species of Liparis s.l. (Orchidaceae: Malaxideae) from Southwest China based on morphological characters and phylogenetic evidence[J]. Plant Diversity, 2021, 43(05): 401-408.

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Three new species of Liparis s.l. (Orchidaceae: Malaxideae) from Southwest China based on morphological characters and phylogenetic evidence

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