Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 638 No. 3: 5 Mar. 2024
Type: Article
Published: 2024-03-05
DOI: 10.11646/phytotaxa.638.3.5
Page range: 257-267
Abstract views: 60
PDF downloaded: 2

A new species of Holcoglossum (Orchidaceae, Aeridinae) from Southern Shan State, Myanmar with taxonomic notes on Holcoglossum himalaicum

Independent Researcher, Weimar, Germany.
Faculty of Graduate Studies, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10250, Sri Lanka.
Department of Plant and Soil Science, Texas Tech University, Lubbock, Texas 79409, U.S.A.
Epidendroideae Holcoglossum clausum Indo-Myanmar Biodiversity Hotspot wild orchid trade Vandeae Monocots

Abstract

A new species of Holcoglossum is described and illustrated from Myanmar with colour plates, line drawing and photographs. The comparison and differentiation are made with H. semiteretifolium and H. himalaicum. Holcoglossum clausum is allied to H. himalaicum owing to the similar coloration and the long spur, however, they differ based on the size of the petals (7–8 mm × 2–3 mm vs. 4–5 mm × 2 mm), the length of the petiole (1.8 cm vs. 3–4 cm) and the length of the stem (4 cm vs. 5–24 cm). From H. semiteretifolium the new species can be distinguished by its growth (pendant vs. upright), the much longer leaves (45 cm vs. 15 cm) and the longer spur (1.3 cm vs. 6.4 mm). Furthermore, we reduce H. gaoligongense and Pendulorchis gaoligongense var. lushuiensis to the synonymy of H. himalaicum, as there are no discernible morphological differences between them, and they both inhabit the same climate type, namely the subtropical highland climate.

References

  1. Averyanov, L.V. (1988) New taxa and nomenclature changes in the Orchidaceae family of Vietnamese flora. Botanicheskii Zhurnal. Moscow & Leningrad [St. Petersburg] 73 (3): 423–432.
  2. Bachman, S. & Moat, J. (2012) GeoCAT –An open-source tool for rapid red list assessments. BGjournal 9 (1): 11–13. [https://www.jstor.org/stable/24811237]
  3. Beck, H.E., Zimmermann, N.E., McVicar, T.R., Vergopolan, N., Berg, A. & Wood, E.F. (2018) Present and future Köppen-Geiger climate classification maps at 1-km resolution. Scientific Data 5: 180214. https://doi.org/10.1038/sdata.2018.214
  4. Chase, M.W. & Hills, H.H. (1991) Silica gel: An ideal material for field preservation of leaf samples for DNA studies. Taxon 40: 215–220. https://doi.org/10.2307/1222975
  5. Chen, L.J., Shi, X.C. & Rao, W.H. (2014) Pendulorchis gaoligongense var. lushuiensis (Orchidaceae, Vandeae), a New Variety from Yunnan, China. Novon 23 (2): 143–146. https://doi.org/10.3417/2010128
  6. Christenson, E.A. (1987) Infrageneric classification of Holcoglossum Schltr. (Orchidaceae: Sarcanthinae) with a key to the genera of the Vanda-Aerides alliance. Notes from the Royal Botanic Garden, Edinburgh. 44 (2): 249–256. [https://archive.org/details/notes-from-royal-botanic-garden-edinburgh-44-002-249-256]
  7. Dalström, S.R., Gyeltshen, N., Gyeltschen, C. & Gyeltschen, N. (2012) Thunder Dragon Orchids, a conservation project in Bhutan designed to protect Orchids. Orchids; the magazine of the American Orchid Society 81: 494–497.
  8. Deb, D.B., Sen Gupta, G. & Malick, K.C. (1968) A Contribution to the flora of Bhutan. Bulletin of the Botanical Society of Bengal 22 (2): 169–217.
  9. Deori, N.C. & Das, G.C. (1976) Notes on rare orchids from North-eastern India –II. Bulletin of Botanical Survey of India 18 (1–4): 233–235
  10. Fan, J., Qin, H.N., Li, D.Z. & Jin, X.H. (2009) Molecular Phylogeny and Biography of Holcoglossum (Orchidaceae: Aeridinae) Based on Nuclear ITS, and Chloroplast trnL-F and matk. Taxon 58 (3): 849–861. [https://www.jstor.org/stable/27756950]
  11. Gardiner, L.M. (2012) New combinations in the genus Vanda (Orchidaceae). Phytotaxa 61: 47–54. https://doi.org/10.11646/phytotaxa.61.1.4
  12. Hayata, B. (1906) Supplements to the Enumeratio Plantarum Formosanarum. Botanical Magazine (Tokyo) 20: 77–78. [https://www.biodiversitylibrary.org/page/41558090]
  13. 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: 23 December 2023).
  14. Jakha, H.Y., Deb, C.R., Singh, S.K., Verma, D., Dey, S. & Jamir, N.S. (2015) Pendulorchis (Orchidaceae) - A new generic record for Nagaland, India. Keanean Journal of Science 4: 31–34.
  15. Jin, X.-H. (2005) Generic delimitation and a new infrageneric system in the genus Holcoglossum (Orchidaceae: Aeridinae). Botanical Journal of the Linnean Society 149 (4): 465–468. https://doi.org/10.1111/j.1095-8339.2005.00463.x
  16. Jin, X.H. & Wood, J.J. (2009) Holcoglossum Schlechter. In: Wu, C.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China Volume 25. Science Press, Beijing, & Missouri Botanical Garden Press, St. Louis. pp. 499–502.
  17. Jin, X.H., Zhao, X. & Shi, X. (2009) Native Orchids from Gaoligongshan Mountains, China. Science Press, Bejing, 483 pp.
  18. Li, H. (2003) Ascocentrum Schlechter. In: Li, H. (Ed.) Flora Yunnanica 14. Science Press, Bejing, pp. 813–816.
  19. Li, Z.H., Ma, X., Wang, D.-Y., Li, Y.-X., Wang, C.-C. & Jin, X.-H. (2019) Evolution of plastid genomes of Holcoglossum (Orchidaceae) with recent radiation. BMC Evolutionary Biology 19: 63. https://doi.org/10.1186/s12862-019-1384-5
  20. Liu, Z.J., Chen, L.J., Chen, S.C., Cai, J., Tsai, W.C., Hsiao, Y.Y., Rao, W.H., Ma, X.Y. & Zhang, G.Q. (2011) Paraholcoglossum and Tsiorchis, two new Orchid genera established by molecular and morphological analyses of the Holcoglossum Alliance. PlosOne 6 (10): e24864. https://doi.org/10.1371/journal.pone.0024864
  21. Ormerod, P., Kurzweil, H. & Watthana, S. (2021) Annotated List of Orchidaceae for Myanmar. Phytotaxa 481: 1–262. https://doi.org/10.11646/phytotaxa.481.1.1
  22. POWO (2023) Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.plantsoftheworldonline.org/ (accessed: 15 June 2023).
  23. Pridgeon, A., Cribb, P., Chase, M.W. & Rasmussen, F.N. (2014) Genera Orchidacearum Volume 6, Epidendroideae (Part three). Oxford University Press, Oxford, 544 pp.
  24. Rice, R. (2018) Photo Intro to: Vandoid Orchid Genera in Asia. Nature & Travel Books. 202 pp.
  25. Schlechter, F.R.R. (1913) Die Orchidaceen von Deutsch-Neu-Guinea. Repertorium Specierum Novarum Regni Vegetabilis, Beihefte 1: 1–1079.
  26. Schlechter, F.R.R. (1919) Orchideologiae Sino-Japonicae Prodromus. Eine kritische Besprechung der Orchideen Ost-Asiens. Repertorium Specierum Novarum Regni Vegetabilis, Beihefte 4: 1–319.
  27. Seidenfaden, G. (1970) Contributions to the Orchid Flora of Thailand II. Botanisk Tidsskrift 65 (4): 313–370.
  28. Seidenfaden, G. (1988) Orchid Genera in Thailand 14: Fifty-nine Vandoid genera. Opera Botanica 95: 1–356.
  29. Tsi, Z.-H. (1982) A study of the genus Holcoglossum of Orchidaceae. Acta Phytotaxonomica Sinica 20 (4): 439–444. [https://www.jse.ac.cn/EN/Y1982/V20/I4/439]
  30. Wang, X., Li, J., Wang, C. & Jin, X.-H. (2018) New information of orchids in Tibet, China. Guihaia 38 (11): 1440–1445. http://dx.doi.org/10.11931/guihaia.gxzw201803037
  31. Wang, R.-B., Zhang, Z.E., Yuan, Z.-H., Zhang, Y.U., Mou, Z.-M. & Zhao, D.-K. (2023) Holcoglossum ×kunmingense hybr. nat. nov. (Orchidaceae: Aeridinae) from Yunnan, China. Phytotaxa 573 (1): 131–139. https://doi.org/10.11646/phytotaxa.573.1.9
  32. Xiang, X.-G., Hu, H., Wang, W. & Jin, X.-H. (2011) DNA barcoding of the recently evolved genus Holcoglossum (Orchidaceae: Aeridinae): a test of DNA barcode candidates. Molecular Ecology Resources 11 (6): 1012–1021. https://doi.org/10.1111/j.1755-0998.2011.03044.x
  33. Xiang, X.-G., Li, D., Jin, X.-H., Hu, H., Zhou, H., Jin, W. & Lai, Y. (2012) Monophyly or Paraphyly– The Taxonomy of Holcoglossum (Aeridinae: Orchidaceae). PLOS One 7 (12): e52050. https://doi.org/10.1371/journal.pone.0052050
  34. Zhang, G.Q., Liu, K.W., Chen, L.J., Xiao, X.J., Zhai, J.W., Li, L.Q., Cai, J., Hsiao, Y.Y., Rao.W.H., Huang, J., Ma, X.Y., Chung, S.-W., Huang, L-Q., Tsai, W.-C. & Liu, Z.-J. (2013) A new molecular phylogeny and a new genus, Pendulorchis, of the Aerides–Vanda alliance (Orchidaceae: Epidendroideae). PLoS One 8 (4): e60097. https://doi.org/10.1371/journal.pone.0060097
  35. Zhao, J., Zhou, P., Li, X., Zhang, L., Jin, X.-H. & Xiang, X. (2020) Temporal and spatial pattern of Holcoglossum Schltr. (Orchidaceae), an East Asian endemic genus, based on nuclear and chloroplast genes. Frontiers in Ecology and Evolution 8: 245. https://doi.org/10.3389/fevo.2020.00245
  36. Zhou, X., Cheng, Z., Liu, Q., Zhang, J., Hu, A., Huang, M., Hu, C. & Tian, H.Z. (2016) An updated checklist of Orchidaceae for China, with two new national records. Phytotaxa 276 (1): 1–148. https://doi.org/10.11646/phytotaxa.276.1.1