Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 715 No. 3: 22 Aug. 2025
Type: Article
Published: 2025-08-22
DOI: 10.11646/phytotaxa.715.3.8
Page range: 287-294
Abstract views: 671
PDF downloaded: 16

Primula longistamina (Primulaceae), a new species from Eastern Himalaya, India

Department of Botany, Bholanath College (Autonomous), Dhubri-783324, Assam, India; Biological Science and Technology Division, CSIR-North East Institute of Science and Technology (CSIR-NEIST), Jorhat, Assam, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
Department of Botany, Centre for Advanced Studies in Botany, North-Eastern Hill University, Shillong 793022, India
Biological Science and Technology Division, CSIR-North East Institute of Science and Technology (CSIR-NEIST), Jorhat, Assam, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
Arunachal Pradesh Dibang valley Morphology New taxon Primrose Eudicots

Abstract

Primula longistamina, a new species from Hunli, Upper Dibang Valley District of Arunachal Pradesh, is herein described and illustrated. It is closely resembling with Primula lacerata in its leaf shape, scape length, inflorescence type, and floral condition and colour but, it is easily distinguished by several diagnostic characters like its stoloniferous habit, longer petiole, exannulate flowers, entire corolla lobes, longer pedicels, tomentose inner corolla surface, elongated filaments and styles, and an oblate ovary. A comparative table highlighting the differences between the new species and its allied taxa along with identification key of the Indian species of the section Chartacea is provided. Also, photographic plates and detailed illustrations are provided to aid in accurate identification of the new species.

References

  1. APG (Angiosperm Phylogeny Group) (2016) An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. Botanical Journal of the Linnean Society 181 (1): 1–20.
  2. Basak, S.K. & Maiti, G.G. (2000) Primula arunachalensis sp. nov. (Primulacaeae) from the Eastarn Himalaya. Acta Phytotax. Geobot. 51 (1): 11.
  3. Basak, S.K., Maiti, G. & Hajra, P.K. (2014) The Genus Primula. In India: A Taxonomic Revision. Bishen Singh Mahendra Pal Singh, Dehra Dun, 668 pp.
  4. Bawri, A., Gajurel, P.R. & Khan, M.L. (2014a) Primula lacerata (Primulaceae)-a rare species and addition to the flora of India from East Himalayan Region. Rheedea 24 (1): 63‒66.
  5. Bawri, A., Gajurel, P.R. & Khan, M.L. (2016) Primula calderiana subsp. Bawaii (Primulaceae): A new subspecies from Arunachal Pradesh, India. Phytotaxa 265 (1): 67–72.
  6. Bawri, A., Gajurel, P.R. & Khan, M.L. (2014b) New distribution records of Primula species in Arunachal Pradesh, India. Bioscience Discovery 5 (1): 06‒10.
  7. Bawri, A., Gajurel, P.R. & Khan, M.L. (2015) Rediscovery of Primula polonensis. Kew Bulletin 70 (4): 56. https://doi.org/10.1007/s12225-015-9605-6
  8. Bista, M.S., Adhikari, M.K. & Rajbhandari, K.R. (2001) Flowering plants of Nepal (Phanero- grams). Department of Plant Resources, Kathmandu, Nepal, 399 pp.
  9. Fang, R.Z. (1994) Primulaceae. In: Wang,W.T. & Wu,S.G. (eds.) Vascular Plants of the Heng- duan Mountains. Science Press, Beijing, pp. 1477–1524.
  10. Fang, R.Z. (2003) Primulaceae. In: Institutum Botanicum Kunmingense Academiae Sinicae (org.) Flora of Yunnanica, vol. 15. Science Press, Beijing, pp. 326–514.
  11. Fenderson, G.K. (1986) A synoptic guide to the genus Primula. Allen Press, Lawrence, Kansas, 213 pp.
  12. Grierson, A.J.C. & Long, D.G. (1999) Primula. In: Long, D.G. (eds.) Flora of Bhutan, vol. 2 (2). Royal Botanic Garden Edinburgh and Royal Government of Bhutan, pp. 516–554.
  13. Hara, H. (1966) The flora of Eastern Himalaya. University of Tokyo Press, Tokyo, 754 pp.
  14. Hara, H. (1971) Flora of Eastern Himalaya: Second Report. University of Tokyo Press, Tokyo, 393 pp. https://doi.org/10.2307/1219257
  15. Hooker, J.D. (1882) Flora of British India vol. 3. London, L. Reeve, pp. 482–492.
  16. Hu, C.M. & Kelso, S. (1996) Primulaceae. In: Wu, Z.Y. & Raven, P.H. (eds.) Flora of China, vol. 15. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, 99–185 pp. [http://www.iplant.cn/info/Primulaceae?t=foc]
  17. Hu, C.M. (1986) Primulaceae. In: Wu,Z.Y. (eds.) Flora Xizangica, Vol. 3. Science Press, Beijing, pp. 745–847.
  18. Hu, C.M. (1990) Primula. In: Chen, F.H. & Hu, C.M. (eds.) Flora Reipublicae Popularis Sinicae, vol. 59 (2). Science Press, Beijing, pp. 1–277.
  19. iNaturalist (2025) Available from: https://www.inaturalist.org (accessed 20 May 2025)
  20. 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: http://www.iucnredlist.org/documents/redlistguidelines (accessed 28 July 2025)
  21. Kingdon-Ward, F. (1930) The distribution of Primulas from the Himalaya to China, with descriptions of some New Species. Ann. Bot. 44 (1): 111–125.
  22. Kress, W.J., De Filipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003) A Checklist of the Trees, Shrubs, Herbs, and Climbers of Myanmar. United States National Herbarium, Washington, DC: Smith- Sonian Institution, 590 pp.
  23. Linnaeus, C. (1753) Species Plantarum, vol. 1. Impensis laurentii Salvii, Stockholm, 560 pp.
  24. Mao, A.A., Krishna, G. & Jalal, J. (2022) Notes on recollection of Primula sherriffiae W.W.Sm after a gap of 74 years from India with comments on the typification of the name. Phytotaxa 572 (2): 234‒238. https://doi.org/10.11646/phytotaxa.571.2.10
  25. Midday, M., Ghosh, J. & Maity, D. (2022) Rediscovery of Sikkim Himalayan endemic Primula munroi subsp. schizocalyx (Primulaceae) after a century. Pleione 15 (3): 470‒475.
  26. Naithani, H.B. (1990) Flowering Plants of India, Nepal & Bhutan (not recorded in Sir J.D. Hookers Flora of British India). Surya Publications, Dehradun, 711 pp.
  27. Ohashi, H. (1975) The Flora of Eastern Himalaya:Third Report. University of Tokyo Press, Tokyo, 458 pp.
  28. Pax, F.A. (1889) Monographische Übersichtüber die Arten der Gattung Primula. Botanische Jahrbücher Für Systematik, Pflanzengeschichte Und Pflanzengeographie 10 (3): 75–241.
  29. Pax, F.A., Knuth, R. (1905) Primulaceae. Das Pflanzenreich: regni vegetablilis conspectus 22: 1–363.
  30. POWO (2005) Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Available from: https://powo.science.kew.org/; Plantsoftheworldonline.org/ (accessed 28 July 2025)
  31. Rajbhandari, K.R., Rai, S.K. & Chhetri, R. (2021) A Hand book of the Flowering Plants of Nepal 3. Department of Plant Resources, Thapathali, Kathmandu, Nepal, 331 pp.
  32. Richards, J. (2003) Primula. Timber Press, London, UK, 346 pp.
  33. Smith, W.W. (1923) New Primulaceae. Notes from the Royal Botanic Garden, Edinburgh 14: 45.
  34. Smith, W.W. (1936) New and Interesting Plants. New Flora and Silva 8: 131–132.
  35. Smith, W.W. & Fletcher, H.R. (1944) X.—The Genus Primula: Section Petiolares. Transactions of the Royal Society of Edinburgh 61 (2): 271–314. https://doi.org/10.1017/S0080456800004750
  36. Smith, W.W. & Forrest, G. (1928) The Sections of the Genus Primula. Notes from the Royal Botanic Garden Edinburgh 16 (76): 1–47.
  37. Sun, H. & Zhou, Z.K. (2002) Seed plants of the big bend gorge of Yalu Tsangpo in SE Tibet, Himalayas. Yunnan Science and Technology, Kunming, 1–425 pp.
  38. Wu, Y.T. (1999) Flora Sichuanica, vol. 13. Sichuan Science and Technology Press, Chengdu, 288 pp.
  39. Xu, B., Li, Z.M. & Sun, H. (2014) Seed plants of the alpine subnival belt from the Hengduan Mountains SW China. Science Press, Beijing, 409 pp.

How to Cite

Hajong, B., Singh, H. & Bharali, P. (2025) Primula longistamina (Primulaceae), a new species from Eastern Himalaya, India. Phytotaxa 715 (3): 287–294. https://doi.org/10.11646/phytotaxa.715.3.8