Vol. 78 No. 2 (2023)
Articles

Argostemma kamjongense (Rubiaceae), a new species from Manipur, Northeast India

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  • Bimolkumar S. Sadokpam,
  • Sandhyarani D. Khomdram,
  • Sanatombi D. Yumkham,
  • Dhaneshwor Waikhom
Bimolkumar S. Sadokpam
Plant Physiology Laboratory, Department of Life Sciences (Botany), Manipur University, Canchipur 795003
Sandhyarani D. Khomdram
Department of Botany, Mizoram University, Aizawl 796004, Mizoram
Sanatombi D. Yumkham
Plant Physiology Laboratory, Department of Life Sciences (Botany), Manipur University, Canchipur 795003
Dhaneshwor Waikhom
Plant Physiology Laboratory, Department of Life Sciences (Botany), Manipur University, Canchipur 795003
DOI: https://doi.org/10.36253/jopt-14877

Published 2023-10-10

Keywords

  • Argostemma kamjongense,
  • new species,
  • critically endangered,
  • ecological indicator,
  • Manipur (Northeast India)

How to Cite

Sadokpam, B. S., Khomdram, S. D., Yumkham, S. D., & Waikhom, D. (2023). Argostemma kamjongense (Rubiaceae), a new species from Manipur, Northeast India. Webbia, 78(2), 79–86. https://doi.org/10.36253/jopt-14877

Copyright (c) 2023 Bimolkumar S. Sadokpam, Sandhyarani D. Khomdram, Sanatombi D. Yumkham, Dhaneshwor Waikhom

Creative Commons License

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

Abstract

A new species, Argostemma kamjongense (Rubiaceae) confined to Kamjong District of Manipur (Northeast India) is described and illustrated. It is akin to closely allied species, A. verticillatum and A. sarmentosum, however can be easily distinguishable by the number of lateral veins on the leaves, size of the leaves, fewer number of bracts, slightly reflexed corolla lobes at maturity, style not exserted and enclosed within anther cone. The taxon’s potential as a good ecological indicator is discussed along with its ecological adaptations for survival. The new species is also provisionally assessed here as Critically Endangered (CR) according to IUCN Red List Categories and Criteria.

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References

  1. Balan AP, Robi AJ, Sasidharan N. 2021. Argostemma quarantena (Rubiaceae, Ruboideae), a new species from southern Western Ghats, India. Webbia 76(1): 47–52. https://doi: 10.36253/jopt–9592.
  2. Bremer B. 1989. The genus Argostemma (Rubiaceae–Argostemmateae) in Borneo. Annals of the Misssouri Botanical Garden. 76:7–49.
  3. Chen T, Taylor CM. 2011. Argostemma. In: Wu ZY, Raven PH, Hong DY. (Eds). Flora of China. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis Vol. 19. 75–77. http://www.iplant.cn/foc/pdf/Argostemma.
  4. Hooker JD. 1880. Rubiaceae In: Hooker JD. (Ed). The Flora of British India, Vol. 3. Reeve & Co. London, 17–209.
  5. 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, https://www.iucnredlist.org/documents/RedListGuidelines. [accessed 30 March 2023].
  6. Lanorsavanh S, Chantaranothai P, Souvannakhoummane K. 2020. Six new species of Argostemma Wall. (Rubiaceae) from Laos. Nord. J. Bot. njb02714, https://doi. org/10.1111/njb.0271.
  7. Mabberley D. 2017. Mabberley's Plant-Book. In Mabberley's Plant-book: A Portable Dictionary of Plants, their Classification and Uses. Cambridge University Press, Cambridge. https://doi. org/10.1017/9781316335581.
  8. Pandey RP, Diwakar PG. 2008. An integrated checklist flora of Andaman & Nicobar Islands, India. J. Econ. Tax. Bot. 32: 403–500.
  9. POWO 2023. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. http://www. plantsoftheworldonline.org/ Retrieved 12 January 2023.
  10. Puff C, Igersheim A, Buchner R, Rohrhofer U. 1995. The United Stamens of Rubiaceae. Morphology, Anatomy; their role in pollination ecology. Missouri Botanical Garden Press. 82 (3): 357–382.
  11. Ridley HN. 1927. The genus Argostemma. Journal of Botany. 65: 25–41.
  12. Sridith K. 1999. Four new species, a new variety, and a status change in Argostemma (Rubiaceae) from Thailand. Nord. J. Bot. 19: 171–178.
  13. Sridith K, Puff C. 2000. Distribution of Argostemma Wall. (Rubiaceae), with special reference to Thailand and surrounding areas. Thai Forest Bulletin (Botany). 28: 123–138.
  14. Sridith K. 2007. Notes on the genus Argostemma (Rubiaceae) of the Malay Peninsular and Peninsular Thailand. Blumea. 52:367–377. https://doi. org/10.3767/000651907X609115.
  15. Tanaka N, Ohi–Toma T, Murata J. 2010. A new species of Argostemma (Rubiaceae) from Mount Victoria, Myanmar. Blumea. 55:65–67. https://doi:10.3767/000651910X499178.
  16. Vu HT, Nguyen TT, Nguyen HQ, Le KD, Do TV. 2020. Notes on taxonomy of the genus Argostemma (Rubiaceae) from Vietnam. Thai Forest Bulletin (Botany). 48(2): 234–238. https://doi.org/10.20531/tfb. 2020.48.2.16.
  17. Wallich N. 1824. Argostemma In: Roxburgh W. Flora Indica: or Description of Indian plants II. Mission Press, Serampore, 324–327.