Taxonomy notes on Vandeae (Orchidaceae) from China: Five new species and two new records

doi:10.1016/j.pld.2021.01.009

Plant Diversity ›› 2021, Vol. 43 ›› Issue (05): 379-389.DOI: 10.1016/j.pld.2021.01.009

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Taxonomy notes on Vandeae (Orchidaceae) from China: Five new species and two new records

Jian-Wu Li^a,b, Ji-Dong Ya^c, De-Ping Ye^d, Cheng Liu^c, Qiang Liu^e, Rui Pan^f, Zai-Xing He^g, Bo Pan^a, Jie Cai^c, Dong-Liang Lin^h, Xiao-Hua Jin^h

a Herbarium (HITBC), Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla Yunnan, CN-666303, PR China;
b Core Batanical Gardens, Chinese Academy of Sciences, Menglun, Mengla Yunnan, CN-666303, PR China;
c Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132, Heilongtan, Kunming, Yunnan, CN-650201, PR China;
d Pu'er Forestry and Grassland Bureau, Pu'er, Yunnan, CN-665000, PR China;
e Yunnan Forestry Technological College, Jindian Road, Panlong District, Kunming, Yunnan CN-650000, PR China;
f Ning'er Forestry and Grassland Bureau, Ning'er, Yunnan, CN-665100, PR China;
g Xishuangbanna State Nature Reserve, Yiwu, Mengla, Yunnan, CN-666306, PR China;
h National Herbarium (PE) and State Key Lab of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing CN-100093, PR China

Received:2020-10-23 Revised:2021-01-11 Online:2021-10-25 Published:2021-11-18
Contact: Jian-Wu Li, Xiao-Hua Jin
Supported by:
This work was supported by Grant from National Forestry and Grassland Administration (No. 2019073018, 2019073019, 2019073002, 2019073003), Science and Technology Basic Resources Investigation Program of China "Survey and Germplasm Conservation of Plant Species with Extremely Small Populations in South-west China" (Grant No. 2017FY100100), National Natural Science Foundation of China (No. 31870195), Strategic Biological Resources Capacity Building Project from the Chinese Academy of Sciences "Seed Plants Research in Xishuangbanna Karst Region" (Grant No. KFJ-BRP-017-36), the Large-scale Scientific Facilities of the Chinese Academy of Sciences (Grant No. 2017-LSFGBOWS-02) and the National Wild Plant Germplasm Resource Center, National Science & Technology Infrastructure. We are grateful to Guoping YANG (Xishuangbanna tropical Botanical Garden) for his help in the field work, to Congrui AI for her to showing us the literature, and to Lian-Yi Li for his help with image processing.

Abstract

Abstract: Five new species (Gastrochilus yei, Gastrochilus minimus, Luisia simaoensis, Taeniophyllum xizangense, Tuberolabium subulatum) and two newly recorded species (Cleisostoma tricornutum, Luisia inconspicua) of Vandeae (Orchidaceae) from China are described and illustrated. Gastrochilus yei is similar to G. affinis and G. nepalensis, but differs from them by having an epichile not lobed, the apex of the hypochile not bilobed, and a tine on the apex of the leaf. Gastrochilus minimus is similar to G. acinacifolius, but can be distinguished from the latter by having a flabellate epichile that is densely hirsute on the adaxial surface and an inconspicuous central cushion; in addition, the hypochile of G. minimus has a keel that extends to the apex of the epichile. Taeniophyllum xizangense is similar to T. stella and T. radiatum, but it is distinguished from them by having much bigger flowers, inflorescences densely covered with short-bristly hairs, papillae on the external surface of sepals, and bigger triangular-ovate viscidium. Luisia simaoensis is similar to L. magniflora and L. ramosii, but can be easily distinguished from them by having lateral sepals longer than dorsal sepals and petals, lip with irregular and waved margins, and lip with bilobed apex. Luisia inconspicua is moved from Gastrochilus to Luisia based on phylogenetic analyses of plastid matK sequence data. Tuberolabium subulatum is similar to T. carnosum, but it can be easily distinguished from the latter by having an inflorescence much shorter than the leaves, yellow sepals and petals, and many small papillae outside the lip lobes.

Key words: New species, New records, Orchidaceae, Vandeae, China

Jian-Wu Li, Ji-Dong Ya, De-Ping Ye, Cheng Liu, Qiang Liu, Rui Pan, Zai-Xing He, Bo Pan, Jie Cai, Dong-Liang Lin, Xiao-Hua Jin. Taxonomy notes on Vandeae (Orchidaceae) from China: Five new species and two new records[J]. Plant Diversity, 2021, 43(05): 379-389.

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Taxonomy notes on Vandeae (Orchidaceae) from China: Five new species and two new records

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