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      Calanthe sieboldopsis (Orchidaceae, Epidendroideae, Collabieae), a new species from Luoxiao Mountains, eastern China

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          Abstract

          Calanthe sieboldopsis , a new species, is here described and illustrated from Luoxiao Mountains, Jiangxi Province, eastern China. It is morphologically similar to C. sieboldii Decne. ex Regel, but differs from the latter in having smaller flowers, longer spurs, rectangular mid-lobes with emarginate apex ( vs. elliptic mid-lobes with mucronate apex), disc with 3 ridges and the proximal ends of the lateral 2 ridges enlarged with light reddish spots and minute white hairs ( vs. disc with 5 ridges and 2 rows of white short hairs at base) and pollinia equal in size ( vs. unequal in size). A preliminary risk-of-extinction assessment, according to the IUCN Red List Categories and Criteria, is given for the new species.

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          Most cited references 12

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          A new phylogenetic analysis sheds new light on the relationships in the Calanthe alliance (Orchidaceae) in China.

          The taxonomy of the Calanthe alliance (Epidendroideae, Orchidaceae), consisting of Calanthe, Cephalantheropsis, and Phaius, has been difficult for orchidologists to understand because of the presence of common morphological features. In this study, in addition to morphological and geographical analyses, maximum parsimony and Bayesian inference analyses were performed based on nucleotide sequences of the nuclear internal transcribed spacer and cpDNA genes of 88 taxa representing the major clades of the Calanthe alliance in China. The results indicated that Cephalantheropsis is monophyletic, while both Phaius and Calanthe are polyphyletic. In Phaius, a total of three species, P. flavus, P. columnaris, and P. takeoi, were segregated to form a new genus, Paraphaius. In Calanthe, subgenus Preptanthe and sect. Styloglossum were both categorized as distinct genera from Calanthe. Our results also confirm that Calanthe delavayi and C. calanthoides are members of Calanthe. Previous studies assigned C. delavayi to Phaius and C. calanthoides to Ghiesbrechtia. Five sections, namely, Alpinocalanthe, Puberula, Ghiesbrechtia, Tricarinata, and Calanthe, three of which are new taxa, were recognized in Calanthe. Therefore, we propose that the Calanthe alliance is composed of six genera: Calanthe, Cephalantheropsis, Paraphaius, Phaius, Preptanthe and Styloglossum.
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            An updated checklist of Orchidaceae for China, with two new national records

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              Danxiaorchis yangii sp. nov. (Orchidaceae: Epidendroideae), the second species of Danxiaorchis

               B. Yang,  S. XIAO,  Y JIANG (2017)
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                Author and article information

                Contributors
                Journal
                PhytoKeys
                PhytoKeys
                3
                urn:lsid:arphahub.com:pub:F7FCE910-8E78-573F-9C77-7788555F8AAD
                PhytoKeys
                Pensoft Publishers
                1314-2011
                1314-2003
                2020
                10 April 2020
                : 145
                : 37-45
                Affiliations
                [1 ] School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China
                [2 ] Key Laboratory of Plant Resources in Jiangxi Province, Nanchang, Jiangxi 330031, China
                [3 ] Shanghai Chenshan Botanic Garden, Songjiang District, Shanghai 201602, China
                [4 ] Research Centre of Ecological Sciences, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
                Author notes
                Corresponding author: Bo Li ( hanbolijx@ 123456163.com )

                Academic editor: V. Droissart

                Article
                49386
                10.3897/phytokeys.145.49386
                7165192
                Bo-Yun Yang, Huo-Lin Luo, Wei-Chang Huang, Dong-Jin Xiong, Shao-Lin Tan, Bo Li

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Funding
                Funded by: National Natural Science Foundation of China 501100001809 http://doi.org/10.13039/501100001809
                Categories
                Research Article
                Orchidaceae
                Taxonomy
                Asia

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