Abstract
Gastrochilus yehii S. I. Hsieh, C. T. Lee & J. H. Wu, a new species of Orchidaceae discovered in Taiwan, is described and illustrated. It is morphologically close to G. ciliaris F. Maek., G. deltoglossus T.C. Hsu, S.I. Hsieh, J.H. Wu & H.C. Hung, and G. raraensis Fukuy. The distinguishing characters of G. yehii are semiorbicular epichile, which is whitish with purple dots and adaxial with densely long-hairy ciliate margin, and subconical hypochile, which is purple with reddish speckles.
References
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Bhattacharjee, A., Agrawala, D.K., Jalal, J.S. & Deori, C. (2022) Three new synonyms in Gastrochilus (Orchidaceae) with notes on typification of Gastrochilus calceolaris and misreport of Gastrochilus changjiangensis from India. Botany letter 169 (1): 106-118. https://doi.org/10.1080/23818107.2021.2000889</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chen, X., Liu, Z., Zhu, G., Lang, K.Y., Luo, Y.B., Jin, X., Cribb, P.J., Wood, J.J., Gale, S.W., Ormerod, P., Vermeulen, J.J., Wood, H.P., Clayton, D. & Bell, A. (2009) Orchidaceae. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (eds.) Flora of China, Vol. 25 (Orchidaceae). Science Press. Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 1-506.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chung, N.J. & Leou, C.S. (1993) Gastrochilus ciliaris Maekawa, a new addition to the orchid flora of Taiwan. Quart. J. Exp. Forest Nat. Taiwan Univ. 7:79-83.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Editorial Committee of the Red List of Taiwan Plants. (2017) The Red List of Vascular Plants of Taiwan, 2017. Endemic Species Research Institute. Forestry Bureau, Council of Agriculture, Executive Yuan and Taiwan Society of Plant Systematics. 187 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Fukuyama, N. (1934) Studia Orchidacearum Japonicarum <span style="font-family: KozGoPro-Regular, serif;">?</span>. Orchidaceae Formosanae Novae Atque Criticae. Bot. Mag. (Tokyo) 48: 429-442. https://doi.org/10.15281/jplantres1887.48.429</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hsu, T.C., Hsieh, S.I., Wu, J.H. & Hung, H.C. (2018) Gastrochilus deltoglossus (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a new species from Taiwan. Taiwania 63 (4): 360–365.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN Standards and Petitions Committee. (2022) Guidelines for Using the IUCN Red List Categories and Criteria. Version 15.1. Prepared by the Standards and Petitions Committee. Available from https://www.iucnredlist.org/documents/RedListGuidelines.pdf. (accessed: 11 December 2022).</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Ji, Z. (1996) A preliminary revision of Gastrochilus (Orchidaceae). Grihaia 16 (2): 123–154.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lee, Y.I., Yu, S.K., Liao, P.C., Wang, K.H. & Lin, T.P. (2019) Newly discovered native orchids of Taiwan (XIV). Taiwania 64 (4): 339–346.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lin, T.P. (1987) Native Orchids of Taiwan 3. Southern Materials Center, Taipei, Taiwan. 354pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu Q., Kumar, P. & Gao, J.Y. (2019a) Notes on Gastrochilus gongshanensis (Orchidaceae). Kew Bulletin 74: 21. https://doi.org/10.1007/s12225-019-9808-3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu, Q., Song, Y., Jin, X.H. & Gao, J.Y. (2019b) Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data. Botanical Journal of the Linnean Society 189(3): 228–243. https://doi.org/10.1093/botlinnean/boy084</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu, Q., Zhou, S.S., Li, R., Tan, Y.H., Zyaw, M., Xing, X.K. & Gao, J.Y. (2020) Notes on the genus Gastrochilus (Orchidaceae) in Myanmar. PhytoKeys 138: 113–123. https://doi.org/10.3897/phytokeys.138.38781</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nguyen, V.C., Averyanov, L.V., Maisak, T.V., Nguyen, T.L.T., Nguyen, V.K. & Truong, B.V. (2022) Gastrochilus pankajkumarii, (Aeridinae, Epidendroideae, Orchidaceae) a new lithophytic orchid from southern Vietnam. Taiwania 67 (1): 35-39.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Raskoti, B.B. (2015) A new species of Gastrochilus and new records for the orchids of Nepal. Phytotaxa 233 (2): 179–184. https://doi.org/10.11646/phytotaxa.233.2.5</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Rao, W.H., Liu, Z.J., Zhang, G.Q., Chen, X.H., Huang, J., Chen, G.Z. & Chen, L.J. (2019) A new epiphytic species of Gastrochilus (Orchidaceae: Epidendroideae) from Yunnan, China. Phytotaxa 413 (4): 296–300. https://doi.org/10.11646/phytotaxa.413.4.5</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Su, H.J. (2000) Orchidaceae. In: Huang, T.C. (ed.) Flora of Taiwan, 2nd. Edition, Vol. 5, Taipei. pp. 729–1086.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yi, S.R. Huang, Y., Xiao, B., Shen, M.L. & Li, J. (2010) Gastrochilus brevifimbriatus (Orchidaceae, Aeridinae), a New Species from Chongqing, China. Novon 20 (1): 113–116. https://doi.org/10.3417/2008013</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Zhou, X., Cheng, Z., Liu, Q., Zhang, J., Hu, A., Huang, M., Hu, C. & Tian, H. (2016) An updated checklist of Orchidaceae for China, with two new national records. Phytotaxa 276 (1): 001–148. https://doi.org/10.11646/phytotaxa.276.1.1</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chen, X., Liu, Z., Zhu, G., Lang, K.Y., Luo, Y.B., Jin, X., Cribb, P.J., Wood, J.J., Gale, S.W., Ormerod, P., Vermeulen, J.J., Wood, H.P., Clayton, D. & Bell, A. (2009) Orchidaceae. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (eds.) Flora of China, Vol. 25 (Orchidaceae). Science Press. Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 1-506.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Chung, N.J. & Leou, C.S. (1993) Gastrochilus ciliaris Maekawa, a new addition to the orchid flora of Taiwan. Quart. J. Exp. Forest Nat. Taiwan Univ. 7:79-83.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Editorial Committee of the Red List of Taiwan Plants. (2017) The Red List of Vascular Plants of Taiwan, 2017. Endemic Species Research Institute. Forestry Bureau, Council of Agriculture, Executive Yuan and Taiwan Society of Plant Systematics. 187 pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Fukuyama, N. (1934) Studia Orchidacearum Japonicarum <span style="font-family: KozGoPro-Regular, serif;">?</span>. Orchidaceae Formosanae Novae Atque Criticae. Bot. Mag. (Tokyo) 48: 429-442. https://doi.org/10.15281/jplantres1887.48.429</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Hsu, T.C., Hsieh, S.I., Wu, J.H. & Hung, H.C. (2018) Gastrochilus deltoglossus (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a new species from Taiwan. Taiwania 63 (4): 360–365.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN Standards and Petitions Committee. (2022) Guidelines for Using the IUCN Red List Categories and Criteria. Version 15.1. Prepared by the Standards and Petitions Committee. Available from https://www.iucnredlist.org/documents/RedListGuidelines.pdf. (accessed: 11 December 2022).</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Ji, Z. (1996) A preliminary revision of Gastrochilus (Orchidaceae). Grihaia 16 (2): 123–154.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lee, Y.I., Yu, S.K., Liao, P.C., Wang, K.H. & Lin, T.P. (2019) Newly discovered native orchids of Taiwan (XIV). Taiwania 64 (4): 339–346.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lin, T.P. (1987) Native Orchids of Taiwan 3. Southern Materials Center, Taipei, Taiwan. 354pp.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu Q., Kumar, P. & Gao, J.Y. (2019a) Notes on Gastrochilus gongshanensis (Orchidaceae). Kew Bulletin 74: 21. https://doi.org/10.1007/s12225-019-9808-3</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu, Q., Song, Y., Jin, X.H. & Gao, J.Y. (2019b) Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data. Botanical Journal of the Linnean Society 189(3): 228–243. https://doi.org/10.1093/botlinnean/boy084</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu, Q., Zhou, S.S., Li, R., Tan, Y.H., Zyaw, M., Xing, X.K. & Gao, J.Y. (2020) Notes on the genus Gastrochilus (Orchidaceae) in Myanmar. PhytoKeys 138: 113–123. https://doi.org/10.3897/phytokeys.138.38781</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nguyen, V.C., Averyanov, L.V., Maisak, T.V., Nguyen, T.L.T., Nguyen, V.K. & Truong, B.V. (2022) Gastrochilus pankajkumarii, (Aeridinae, Epidendroideae, Orchidaceae) a new lithophytic orchid from southern Vietnam. Taiwania 67 (1): 35-39.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Raskoti, B.B. (2015) A new species of Gastrochilus and new records for the orchids of Nepal. Phytotaxa 233 (2): 179–184. https://doi.org/10.11646/phytotaxa.233.2.5</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Rao, W.H., Liu, Z.J., Zhang, G.Q., Chen, X.H., Huang, J., Chen, G.Z. & Chen, L.J. (2019) A new epiphytic species of Gastrochilus (Orchidaceae: Epidendroideae) from Yunnan, China. Phytotaxa 413 (4): 296–300. https://doi.org/10.11646/phytotaxa.413.4.5</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Su, H.J. (2000) Orchidaceae. In: Huang, T.C. (ed.) Flora of Taiwan, 2nd. Edition, Vol. 5, Taipei. pp. 729–1086.</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Yi, S.R. Huang, Y., Xiao, B., Shen, M.L. & Li, J. (2010) Gastrochilus brevifimbriatus (Orchidaceae, Aeridinae), a New Species from Chongqing, China. Novon 20 (1): 113–116. https://doi.org/10.3417/2008013</span></span></span>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Zhou, X., Cheng, Z., Liu, Q., Zhang, J., Hu, A., Huang, M., Hu, C. & Tian, H. (2016) An updated checklist of Orchidaceae for China, with two new national records. Phytotaxa 276 (1): 001–148. https://doi.org/10.11646/phytotaxa.276.1.1</span></span></span>
