Vol. 80 No. 2 (2025)
Articles

Chamaegastrodia reiekensis: A new holomycotrophic orchid from Mizoram, Northeast India

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  • Lal Tlanhlui,
  • Sandhyarani D. Khomdram,
  • Sanatombi D. Yumkham,
  • Margaret Lalhlupuii,
  • Laldinliana Khiangte,
  • S. Sureshkumar Singh
Lal Tlanhlui
Department of Botany, Mizoram University, Aizawl–796004, Mizoram, India
Sandhyarani D. Khomdram
Department of Botany, Mizoram University, Aizawl–796004, Mizoram, India
Sanatombi D. Yumkham
Department of Life Sciences (Botany), Manipur University, Canchipur–795003, India
Margaret Lalhlupuii
Department of Life Sciences (Botany), Manipur University, Canchipur–795003, India
Laldinliana Khiangte
Department of Life Sciences (Botany), Manipur University, Canchipur–795003, India
S. Sureshkumar Singh
Department of Life Sciences (Botany), Manipur University, Canchipur–795003, India
DOI: https://doi.org/10.36253/jopt-17473

Published 2025-07-18

Keywords

  • Chamaegastrodia reiekensis,
  • Chamaegastrodia guidongensis,
  • mycoheterotrophic,
  • Indo-Burma Hotspot,
  • taxonomy

How to Cite

Tlanhlui, L., Khomdram, S. D., Yumkham, S. D., Lalhlupuii, M., Khiangte, L., & Singh, S. S. (2025). Chamaegastrodia reiekensis: A new holomycotrophic orchid from Mizoram, Northeast India. Webbia, 80(2), 229–238. https://doi.org/10.36253/jopt-17473

Copyright (c) 2025 Lal Tlanhlui, Sandhyarani D. Khomdram, Sanatombi D. Yumkham, Margaret Lalhlupuii, Laldinliana Khiangte, S. Sureshkumar Singh

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Chamaegastrodia reiekensis, a holomycotrophic orchid from Northeast India (Mizoram) is described and illustrated as a new species. It is compared with its closely allied species Chamaegastrodia guidongensis, which although similar in morphology and mycoheterotrophic nature can be distinguished by the presence of slender rhizome, compact sheathing scales, floral bracts equalling or exceeding the ovary in length, larger sepals and petals with more dilated hypochile and distinctly sinuate mesochile margin. A key to species for the genus Chamaegastrodia is also incorporated. The conservation status of the newly described species is also provisionally assessed here as Critically Endangered (CR) according to International Union for Conservation of Nature (IUCN) Red List Categories and Criteria.

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References

  1. Beentje H. 2016. The Kew Plant Glossary, an illustrated dictionary of plant terms (2nd edition). Royal Botanic Gardens Kew, Kew Publishing.
  2. Bhattacharjee A, Chowdhery HJ. 2018. Orchidaceae: Orchidoideae: Cranichideae: Subtribe Goodyerinae. In: Singh P (Ed.), Fascicles of Flora of India. vol. 28. Botanical Survey of India, Kolkata.
  3. Chen SC, Gale SW, Cribb PJ. 2009a. Chamaegastrodia. In: Wu ZY, et al. (Eds.), Flora of China, vol. 25. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
  4. Chen SC, Gale SW, Cribb PJ, et al. 2009b. Odontochilus. In: Wu ZY, et al. (Eds.), Flora of China, vol. 25. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
  5. Doyle JJ, Doyle JL. 1987. A rapid DNA isolation procedure for small quantities of fresh leaf tissue. Phytochemical Bulletin. 19: 11–15.
  6. Govaerts R, Bernet P, Kratochvil K, Gerlach G, Carr G, Alrich P, Pridgeon AM, Pfahl J, Campacci MA, Holland Baptista D, Tigges H, Shaw J, Cribb P, George A, Kreuz K, Wood J. 2022. World Checklist of Orchidaceae. Royal Botanic Gardens, Kew.
  7. Tian HJ, Xing FW. 2008. Chamaegastrodia nanlingensis (Orchidaceae), a new species from Guangdong, China. Novon. 18: 261–263.
  8. IUCN Standards and Petitions Committee. 2022. Guidelines for Using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee, 116 pp. [https://www.iucnredlist.org/documents/RedListGuidelines.pdf]
  9. Jalal JS, Jayanthi J. 2013. Current status and distribution of mycoheterotrophic Orchids of India. Richardiana. 13: 137–155.
  10. Kumar R, Singh SK. 2012. Ex situ conservation of Orchids from Murlen National Park, Champhai, Mizoram. Keanean Journal of Science. 1: 6–11.
  11. Kumar S, Stecher G, Suleski M, Sanderford M, Sharma S, Tamura K. 2024 Molecular Evolutionary Genetics Analysis version 12 for adaptive and green computing. Molecular Biology and Evolution. 41: 1–9.
  12. Li MH, Zhang GQ, Lan SR, Liu ZJ, China Phylogeny Consortium. 2016. A molecular phylogeny of Chinese orchids. Journal of Systematics and Evolution.:349‒362. https://doi.org/10.1111/jse.12187.
  13. Liu YW. 2018. Systematic and taxonomic study on Odontochilus and allies (Orchidaceae) in China. East China Normal University, Shanghai. 1–139.
  14. Maekawa F. 1935. Dua Genera Nova Orchidacearum Japonensium. Botanical Magazine (Tokyo). 49: 596–599.
  15. Odyuo N, Tham BBT. 2008. Dampa Tiger Reserve. In: Floristic diversity of Tiger Reserves of India, Botanical Survey of India, Kolkata. pp. 394–415.
  16. Ormerod P. 2002. Taxonomic changes in Goodyerinae (Orchidaceae: Orchidoideae). Lindleyana 17:189–238.
  17. Ormerod P, Cribb PJ. 2003. Odontochilus. Taxonomic notes. In: Pridgeon AM, Cribb PJ, Chase MW, et al. editors. Genera Orchidacearum 3. Orchidoideae). Oxford, UK: Oxford Univ Press. p 128.
  18. Qu CH, Jin Y, Yu XL, Huang CZ, Wu L, Tian HZ. 2022. Chamaegastrodia guidongensis (Orchidaceae), a new species from Hunan, China. Phytotaxa. 555: 267–272.
  19. POWO. 2025. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet. Available online: http://www.plantsoftheworldonline.org/ (accessed on 3 August 2024).
  20. Rao AN. 2007. Orchid flora of North-east India - An up-to-date Analysis. Bulletin of Arunachal Forest Research. 23: 6–38.
  21. Roy DK, Sinha BK, Sawmliana M. 2012. Eria carinata Gibson ex Lindley (Orchidaceae) - a new record for the flora of Mizoram, India. Pleione. 6: 412–414.
  22. Seidenfaden G. 1994. The genus Chamaegastrodia (Orchidaceae). Nordic Journal of Botany. 14: 293-301.
  23. Sievers F, Wilm A, Dineen D, Gibson TJ, Karplus K, Li W, Lopez R, McWilliam H, Remmert M, Söding J, Thompson JD, Higgins DG. 2011. Fast, scalable generation of high-quality protein multiple sequence alignments using Clustal Omega. Molecular Systems Biology. 7: 539.
  24. Singh DK, Wadhwa BM, Singh KP. 1990. A conspectus of orchids of Mizoram: their status and conservation. Journal of the Orchid Society of India. 4: 51–64.
  25. Tiwari UL, Bhattacharjee A, Tian HZ, Yukawa T, Kumar P. 2021. Chamaegastrodia poilanei–an interesting mycoheterotrophic orchid from India. Rheedea. 31: 191–196.
  26. Zote S, Lalramnghinglova H, Deori C, Phukan S. 2011. Habenaria rhodocheila Hance–A new record to India from Mizoram. Journal of the Orchid Society of India. 25: 41–43.
  27. Zote S, Lalramnghinglova H, Deori C. 2009. Dendrobium salaccense (Blume) Lindl. (Orchidaceae) from Mizoram: A new record for India. Journal of the Orchid Society of India. 23: 91–92.