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Issue: Vol. 720 No. 3: 2 Oct. 2025
Type: Article
Published: 2025-10-02
DOI: 10.11646/phytotaxa.720.3.6
Page range: 263-272
Abstract views: 344
PDF downloaded: 10

A new species of Taraxacum (Compositae, Crepidinae) from Arunachal Pradesh, India: Sexual reproduction detected in the group of Taraxacum sikkimense

Environmental Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur-176061, Himachal Pradesh, India
Environmental Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur-176061, Himachal Pradesh, India
Institute of Botany of the Czech Academy of Sciences, CZ-25243 Průhonice 1, Czech Republic
Institute of Botany of the Czech Academy of Sciences, CZ-25243 Průhonice 1, Czech Republic
India Reproduction system Taraxacum sect. Emodensia Taxonomy Eudicots

Abstract

Taraxacum diluculorum Vik. Kumar, Kirschner & Štěpánek, a new species of T. sect. Emodensia is described from the alpine region of Arunachal Pradesh, Indian Himalayan Region. It is distinct in having white flowers, yellow stigmas, light reddish ochraceous achenes with a short cone and is characterized by sexual reproduction. It is related to T. sikkimense (T. sect. Emodensia), another white-flowered Himalayan species; the name T. sikkimense is second-step lectotypified. There is also a similarity of T. diluculorum with T. suavissimum and T. austrotibetanum of T. sect. Tibetana. However, it differs from these latter primarily in its uniform pollen size, sexuality, colour of stigma, and achene morphology. A detailed comparison and illustrations of T. diluculorum and similar species are provided.

References

  1. Candolle, A.P.de (1838) Prodromus systematis naturalis regni vegetabilis. Treuttel & Würtz, Paris, 330 pp. [https://www.biodiversitylibrary.org/item/7156#page/5/mode/1up]
  2. Chowdhery, H.J., Giri, G.S, Pal, G.D., Pramanik, A. & Das, S.K. (2008) Materials for the Flora of Arunachal Pradesh, vol. 2. Botanical Survey of India & Ministry of Environment & Forests, Kolkata, 491 pp.
  3. Dahlstedt, H. (1926) Plantae sinenses a Dre. H. Smith annis 1921–22 lectae. XIV. Die Gattung Taraxacum. Meddelanden från Göteborgs botaniska Trädgård 2: 143–184. [https://eurekamag.com/research/025/250/025250712.php]
  4. den Nijs, J.C.M., Kirschner, J., Štěpanek, J. & van der Hulst, A. (1990) Distribution of diploid sexual plants of Taraxacum sect. Ruderalia in east-central Europe. Plant Systematics & Evolution 170: 71–84. https://doi.org/10.1007/BF00937850
  5. Ge, X.J., Kirschner, J. & Štěpánek, J. (2011) Taraxacum F.H. Wiggers. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China, vols. 20–21. Missouri Botanical Garden Press, St. Louis & Science Press, Beijing, pp. 270–325. Available from: http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=132314 (accessed 24 September 2025)
  6. Grierson, A.J.C. & Springate, L.S. (2001) Compositae. In: Springate, L.S. (Ed.) Flora of Bhutan including a record of plants from Sikkim and Darjeeling, vol. 2 (3). Royal Botanic Garden, Edinburgh & Royal Government of Bhutan, Thimphu, pp. 1397–1632.
  7. Gürdal, B., Štěpánek, J., Zeisek, V., Kirschner, J. & Özhatay, N. (2018) What is and what is not Taraxacum bithynicum (Compositae, Crepidinae). Phytotaxa 373 (3): 197–210. https://doi.org/10.11646/phytotaxa.373.3.3
  8. Hajra, P.K., Rao, R.R., Singh, D.K. & Uniyal, B.P. (1995) Flora of India, vol. 13. Botanical Survey of India, Calcutta, 454 pp.
  9. Handel-Mazzetti, H. (1907) Monographie der Gattung Taraxacum. Franz Deuticke, Leipzig & Wien, x + 175 pp. + 7 plates. Available from: https://bibdigital.rjb.csic.es/viewer/10236/?offset=19 (accessed 24 September 2025)
  10. Karger, D.N., Conrad, O., Böhner, J., Kawohl, T., Kreft, H., Soria-Auza, R.W., Zimmermann, N.E., Linder, P. & Kessler, M. (2017) Climatologies at high resolution for the Earth land surface areas. Scientific Data 4: 170122. https://doi.org/10.1038/sdata.2017.122
  11. Kirschner, J., Štěpánek, J. & Klimeš, L. (2006) Dandelions in Central Asia: A revision of Taraxacum section Leucantha. Preslia 78: 27–65. [http://www.preslia.cz/P061CKir.pdf]
  12. Kirschner, J., Štěpánek, J., Klimeš, L., Dvorský, M., Brůna, J., Macek, M. & Kopecký, M. (2020) The Taraxacum flora of Ladakh, with notes on the adjacent regions of the West Himalaya. Phytotaxa 457 (1): 1–409. https://doi.org/10.11646/phytotaxa.457.1.1
  13. Kirschner, J., Stepanova, N.Yu., Nosova, M.B. & Štěpánek, J. (2022) Sexual reproduction in Taraxacum sect. Borealia (Asteraceae, Crepidinae) first documented in the continental Russian Far East. Turczaninowia 25 (2): 155–162. https://doi.org/10.14258/turczaninowia.25.2.15
  14. Singh, P., Dash, S.S. & Sinha, B.K. (2019) Plants of Indian Himalayan region—an annotated checklist and pictorial guide, Part I. Botanical Survey of India, Kolkata, 184 pp.
  15. Thiers, B. (2025 onwards) Index Herbariorum: A Global Directory of Public Herbaria and Associated Staff. Available from: http://sweetgum.nybg.org/science/ih/ (accessed March 2025)
  16. Turland, N.J., Wiersema, J.H, Barrie, F.R., Gandhi, K.N., Gravendyck, J., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Klopper, R.R., Knapp, S. Kusber, W.-H., Li, D.-H., May, T.W., Morro, A.M., Prado, J., Price, M.J., Smith, G.F. & Señoret, J.C.Z. (Eds.) (2025) International Code of Nomenclature for algae, fungi, and plants (Madrid Code), accepted by the Twentieth International Botanical Congress, Madrid, Spain, July 2024. Regnum Vegetabile 162. University of Chicago Press, Chicago, USA. Available from: https://www.iaptglobal.org/_functions/code/madrid (accessed 24 September 2025)
  17. van Soest, J.L. (1963) Taraxacum species from India, Pakistan and neighbouring countries. Wentia 10: 1–91. https://doi.org/10.1111/j.1438-8677.1963.tb00013.x
  18. Wiggers, F.H. (1780) Primitiae florae holsaticae. Litteris Mich. Frider. Bartschii, Kiel, 114 pp. [https://archive.org/details/primitiaeflorae00webegoog/page/n5]

How to Cite

Kumar, V., Thakur, K., Kirschner, J. & Štěpánek, J. (2025) A new species of Taraxacum (Compositae, Crepidinae) from Arunachal Pradesh, India: Sexual reproduction detected in the group of Taraxacum sikkimense. Phytotaxa 720 (3): 263–272. https://doi.org/10.11646/phytotaxa.720.3.6