Abstract
A new species, Chamaegastrodia guidongensis L.Wu, H.Z.Tian & C.Z.Huang from Hunan Province, China, is described and illustrated. The new species is distinct from other Y-shaped and T-shaped lip species of Chamaegastrodia by its unique canoe-shaped lip. It is most close to C. vaginata, but distinguishes by the lip and 2 triangular fleshy wings attached to the apex of column.
References
<p>Chen, S.C., Gale, S.W. & Cribb, P.J. (2009) <em>Chamaegastrodia. In:</em> Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.)<em> Flora of China, vol. 25.</em> Science Press & Missouri Botanical Garden Press, Beijing & St. Louis, pp. 69–70.</p>
<p>Chen, S.C., Gale, S.W., Cribb, P.J. & Ormerod, P. (2009) <em>Odontochilus. In:</em> Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.)<em> Flora of China, vol. 25.</em> Science Press & Missouri Botanical Garden Press, Beijing & St. Louis, pp. 80–84.</p>
<p>Chen, S.P., Tian, H.Z., Guan, Q.X., Zhai, J.W., Zhang, G.Q., Chen, L.J., Liu, Z.J., Lan, S.R. & Li, M.H. (2019) Molecular systematics of Goodyerinae (Cranichideae, Orchidoideae, Orchidaceae) based on multiple nuclear and plastid regions. <em>Molecular Phylogenetics and Evolution</em> 139: 106542. https://dx.doi.org/10.1016/j.ympev.2019.106542</p>
<p>Govaerts, R., Bernet, P., Kratochvil, K., Gerlach, G., Carr, G., Alrich, P., Pridgeon, A.M., Pfahl, J., Campacci, M.A., Baptista, D.H., Tigges, H., Shaw, J., Cribb, P., George, A., Kreuz, K. & Wood, J. (2022) <em>World Checklist of Orchidaceae</em>. Royal Botanic Gardens, Kew.<br>Available from: http://wcsp.science.kew.org/ Retrieved (accessed 27 May 2022)</p>
<p>Hong, X., Zhang, T., Wang, O.W., Li, Z.L. & Zhou, S.B. (2013) Two newly recorded genera of Orchidaceae from Anhui province. <em>Journal of Tropical and Subtropical Botany </em>21 (5): 426–428. https://dx.doi.org/10.3969/j.issn.1005-3395.2013.05.007</p>
<p>IUCN (2022) <em>Guidelines for using the IUCN Red List categories and criteria,</em> version 15. IUCN Standards and Petitions Committee.<br>Available from: http://www.iucnredlist.org/resources/redlistguidelines (accessed 27 May 2022)</p>
<p>Li, M.H., Chen, S.P., Lan, S.R., Peng, D.H. & Li, M.B. (2013)<em> Odontochilus poilanei</em> (Gagnep.) Ormerod, a newly recorded species of Orchidaceae from Fujian Province. <em>Journal of Fujian Agricultural and Forestry University (Natural Science Edition)</em> 42 (6): 600–602.</p>
<p>Liu, Y.W. (2018) <em>Systematic and Taxonomic Study on Odontochilus and allies (Orchidaceae) in China</em>. East China Normal University, Shanghai, pp. 1–139.</p>
<p>Maekawa, F. (1935) Dua Genera Nova Orchidacearum Japonensium. <em>The Botanical Magazine</em> 49: 596–599. https://dx.doi.org/10.15281/jplantres1887.49.596</p>
<p>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (2003) <em>Genera Orchidacearum (Vol. 2): Orchidoideae (part 2). Vanilloideae.</em> Oxford University Press, Oxford, pp. 1–360.</p>
<p>Rong, H., Chen, Y.Z., Zhao, B.X., Wang, W.D., Liu, P. & Cheng, Q.D. (2018) Investigation and protection of wild Orchidaceae resources in Ankang city. <em>Shaanxi Forest Science and Technology</em> 46 (2): 44–48.</p>
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<p>Tian, H.Z. & Xing, F.W. (2008) <em>Chamaegastrodia nanlingensis</em> (Orchidaceae), a new species from Guangdong, China. <em>Novon </em>18 (2): 261–263. https://dx.doi.org/10.3417/2006113</p>
<p>Tiwari, U.L., Bhattacharjee, A., Tian, H.Z., Yukawa, T. & Kumar, P. (2021) <em>Chamaegastrodia poilanei</em> – an interesting mycoheterotrophic orchid from India. <em>Rheedea</em> 31 (3): 191–196. https://dx.doi.org/10.22244/rheedea.2021.31.03.09</p>
<p>Tu, X.D., Liu, D.K., Xu, S.W., Zhou, C.Y., Gao, X.Y., Zeng, M.Y., Zhang, S., Chen, J.L., Ma, L., Zhou, Z., Huang, M.Z., Chen, S.P., Liu, Z.J., Lan, S.R. & Li, M.H. (2021) Plastid phylogenomics improves resolution of phylogenetic relationship in the <em>Cheirostylis</em> and <em>Goodyera</em> clades of Goodyerinae (Orchidoideae, Orchidaceae). <em>Molecular Phylogenetics and Evolution</em> 164: 107269. https://dx.doi.org/10.1016/j.ympev.2021.107269</p>
<p>Zhang, H.W., Zhou, Y.Y., Yang, W.W., Chen, W.J. & Jin, X.F. (2013) New materials of seed plants in Zhejiang (IV).<em> Journal of Hangzhou Normal University (Natural Science Edition) </em>40 (5): 570–573. https://dx.doi.org/10.3785/j.issn.1008-9497.2013.05.019</p>
<p>Chen, S.C., Gale, S.W., Cribb, P.J. & Ormerod, P. (2009) <em>Odontochilus. In:</em> Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.)<em> Flora of China, vol. 25.</em> Science Press & Missouri Botanical Garden Press, Beijing & St. Louis, pp. 80–84.</p>
<p>Chen, S.P., Tian, H.Z., Guan, Q.X., Zhai, J.W., Zhang, G.Q., Chen, L.J., Liu, Z.J., Lan, S.R. & Li, M.H. (2019) Molecular systematics of Goodyerinae (Cranichideae, Orchidoideae, Orchidaceae) based on multiple nuclear and plastid regions. <em>Molecular Phylogenetics and Evolution</em> 139: 106542. https://dx.doi.org/10.1016/j.ympev.2019.106542</p>
<p>Govaerts, R., Bernet, P., Kratochvil, K., Gerlach, G., Carr, G., Alrich, P., Pridgeon, A.M., Pfahl, J., Campacci, M.A., Baptista, D.H., Tigges, H., Shaw, J., Cribb, P., George, A., Kreuz, K. & Wood, J. (2022) <em>World Checklist of Orchidaceae</em>. Royal Botanic Gardens, Kew.<br>Available from: http://wcsp.science.kew.org/ Retrieved (accessed 27 May 2022)</p>
<p>Hong, X., Zhang, T., Wang, O.W., Li, Z.L. & Zhou, S.B. (2013) Two newly recorded genera of Orchidaceae from Anhui province. <em>Journal of Tropical and Subtropical Botany </em>21 (5): 426–428. https://dx.doi.org/10.3969/j.issn.1005-3395.2013.05.007</p>
<p>IUCN (2022) <em>Guidelines for using the IUCN Red List categories and criteria,</em> version 15. IUCN Standards and Petitions Committee.<br>Available from: http://www.iucnredlist.org/resources/redlistguidelines (accessed 27 May 2022)</p>
<p>Li, M.H., Chen, S.P., Lan, S.R., Peng, D.H. & Li, M.B. (2013)<em> Odontochilus poilanei</em> (Gagnep.) Ormerod, a newly recorded species of Orchidaceae from Fujian Province. <em>Journal of Fujian Agricultural and Forestry University (Natural Science Edition)</em> 42 (6): 600–602.</p>
<p>Liu, Y.W. (2018) <em>Systematic and Taxonomic Study on Odontochilus and allies (Orchidaceae) in China</em>. East China Normal University, Shanghai, pp. 1–139.</p>
<p>Maekawa, F. (1935) Dua Genera Nova Orchidacearum Japonensium. <em>The Botanical Magazine</em> 49: 596–599. https://dx.doi.org/10.15281/jplantres1887.49.596</p>
<p>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (2003) <em>Genera Orchidacearum (Vol. 2): Orchidoideae (part 2). Vanilloideae.</em> Oxford University Press, Oxford, pp. 1–360.</p>
<p>Rong, H., Chen, Y.Z., Zhao, B.X., Wang, W.D., Liu, P. & Cheng, Q.D. (2018) Investigation and protection of wild Orchidaceae resources in Ankang city. <em>Shaanxi Forest Science and Technology</em> 46 (2): 44–48.</p>
<p>Seidenfaden, G. (1994) The genus <em>Chamaegastrodia</em> (Orchidaceae). <em>Nordic Journal of Botany</em> 14 (3): 293–301. https://dx.doi.org/10.1111/j.1756-1051.1994.tb00603.x</p>
<p>Tian, H.Z. & Xing, F.W. (2008) <em>Chamaegastrodia nanlingensis</em> (Orchidaceae), a new species from Guangdong, China. <em>Novon </em>18 (2): 261–263. https://dx.doi.org/10.3417/2006113</p>
<p>Tiwari, U.L., Bhattacharjee, A., Tian, H.Z., Yukawa, T. & Kumar, P. (2021) <em>Chamaegastrodia poilanei</em> – an interesting mycoheterotrophic orchid from India. <em>Rheedea</em> 31 (3): 191–196. https://dx.doi.org/10.22244/rheedea.2021.31.03.09</p>
<p>Tu, X.D., Liu, D.K., Xu, S.W., Zhou, C.Y., Gao, X.Y., Zeng, M.Y., Zhang, S., Chen, J.L., Ma, L., Zhou, Z., Huang, M.Z., Chen, S.P., Liu, Z.J., Lan, S.R. & Li, M.H. (2021) Plastid phylogenomics improves resolution of phylogenetic relationship in the <em>Cheirostylis</em> and <em>Goodyera</em> clades of Goodyerinae (Orchidoideae, Orchidaceae). <em>Molecular Phylogenetics and Evolution</em> 164: 107269. https://dx.doi.org/10.1016/j.ympev.2021.107269</p>
<p>Zhang, H.W., Zhou, Y.Y., Yang, W.W., Chen, W.J. & Jin, X.F. (2013) New materials of seed plants in Zhejiang (IV).<em> Journal of Hangzhou Normal University (Natural Science Edition) </em>40 (5): 570–573. https://dx.doi.org/10.3785/j.issn.1008-9497.2013.05.019</p>