Research Paper
Two new species of Henckelia Spreng. (Gesneriaceae) from Arunachal Pradesh, India
Shivam Kishwan, Tejas U. Thackeray, Navendu V. Page
Published on: 22 April 2026
Page: 394 - 402
DOI: 10.6165/tai.2026.71.394
Abstract
Two new species of Henckelia (Gesneriaceae), namely Henckelia flaviflora and H. siyomensis are described here. Detailed color plates, notes on their distribution and habitat, provisional IUCN conservation assessment are provided, along with tabular differentiation from morphologically similar species. Both these species inhabit shaded habitats along streams flowing through moist evergreen forests and are presently known only from the Eastern Himalayan Region of Arunachal Pradesh, India. H. flaviflora is described from Kamle district, whereas H. siyomensis is described from Shi-Yomi district.
Keyword: Conservation, Eastern Himalaya, Flora, Henckelia flaviflora, Henckelia siyomensis, North East India, Taxonomy
Literature Cited
Borah, D., Taram, M., Maity, R. 2025 Henckelia davidwoodii (Gesneriaceae), a new species from Indian eastern Himalayas. Nord. J. Bot. 2025(3): e04662.
DOI: 10.1111/njb.04662View Article
Google Scholar
Bhattacharyya, U.C., Lakshminarasimhan, P., Krishna, G. 2023 Gesneriaceae. In: Lakshminarasimhan, P., Arisdason, W., Karthigeyan, K., Krishna, G., Mao, A.A. (eds.) Flora of India. Botanical Survey of India, Kolkata, 830pp.
Burtt, B.L. 2001 Flora of Thailand: annotated checklist of Gesneriaceae. Thai Forest Bull., Bot. 29: 81–109.
Chowlu, K., Maity, R., Shenoy, A., Dash, S.S. 2026 Two new species of Henckelia (Gesneriaceae) from Arunachal Himalayas. Taiwania 71(2): 227–236.
DOI: 10.6165/tai.2026.71.73View Article
Google Scholar
Davies, N.M.J., Drinkell, C., Utteridge, T.M.A. (eds.) 2023 The Herbarium Handbook. Royal Botanic Gardens, Kew. 290 pp.
GRC 2026 Gesneriaceae Resource Centre, Royal Botanical Garden Edinburgh. Available from: https://padme.rbge.org.uk/GRC/ (Accessed on March 22, 2026)
IUCN Standards and Petitions Committee 2024 Guidelines for Using the IUCN Red List Categories and Criteria. Version 16.
Khanal, M., Borah, D., Taram, M., Sarkar, C., Kumar, D. 2025 Henckelia indica (Gesneriaceae), a new species from Arunachal Pradesh, India. J. Econ. Taxon. Bot. 49(3): 188–194.
DOI: 10.61080/JETB/V49/i3/2025/188-194View Article
Google Scholar
Kishwan, S., Thackeray, T.U., Page, N.V. 2025 Henckelia multiflora (Gesneriaceae), A new species from the Eastern Himalayan Region of Arunachal Pradesh, India. Edinb. J. Bot. 82: 1–11.
DOI: 10.24823/ejb.2025.2095View Article
Google Scholar
Mathew, J., Pichan, S., Raju, S., Sarojini, U.S., Madhavan, R. 2022 Henckelia viridiflora (Gesneriaceae), a New Species from the Southern Western Ghats, India. Ann. Bot. Fenn. 59: 143–147.
DOI: 10.5735/085.059.0121View Article
Google Scholar
Middleton, D.J., Nishii, K., Puglisi, C., Forrest, L.L., M?ller, M. 2015 Chayamaritia (Gesneriaceae: Didymocarpoideae), a new genus from Southeast Asia. Pl. Syst. Evol. 301(7): 1947–1966.
DOI: 10.1007/s00606-015-1213-2View Article
Google Scholar
M?ller, M., Nampy, S., Janeesha, A.P., Weber, A. 2017 The Gesneriaceae of India: Consequences of updated generic concepts and new family classification. Rheedea 27: 23–41.
DOI: 10.22244/rheedea.2017.27.1.5View Article
Google Scholar
Naithani, H.B., Verma, P.K., Chandra, A. 2019 Henckelia urticifolia (Buch.-Ham. Ex D. Don) A.Dietr. - An addition to the Flora of Uttarakhand. Indian Forester 145(5): 398–399.
DOI: 10.36808/if/2024/v150i2/169937View Article
Google Scholar
POWO 2026 Plants of the World Online, Kew Science. Available from: https://powo.science.kew.org/ (Accessed on March 22, 2026).
Sahani, V.K., Pertin, M., Variya, M.H., Taram, M., Maity, R., Borah, D. 2024 Henckelia arunachalensis (Gesneriaceae), a new species from Patkai Hills of Arunachal Pradesh, India. Phytotaxa 678: 71–76.
DOI: 10.11646/phytotaxa.678.1.7View Article
Google Scholar
Shi, X.-Z., Yang, L.-H. 2021 Henckelia connata (Gesneriaceae), a new species from eastern Himalayas, China. Nord. J. Bot. 39(5): e03154.
DOI: 10.1111/njb.03154View Article
Google Scholar
Sinha, B.K., Dutta, S. 2016 Taxonomic Account on the Family Gesneriaceae in Northeast India. Nelumbo 58: 1–43.
DOI: 10.20324/nelumbo/v58/2016/105932View Article
Google Scholar
Sirimongkol, S. 2020 A taxonomic revision of the genus Henckelia Spreng. (Gesneriaceae) in Thailand and surrounding countries. Thesis. Trinity College Dublin. School of Natural Sciences. Discipline of Botany.
Sirimongkol, S., Parnell, J., Hodkinson, T., Middleton, D., Puglisi, C. 2019 Five new species of Henckelia (Gesneriaceae) from Myanmar and Thailand. Thai Forest Bull., Bot. 47: 38–54.
DOI: 10.20531/tfb.2019.47.1.08View Article
Google Scholar
Taram, M. 2023 Taxonomic study on Gesneriaceae Rich and Juss in Arunachal Himalayan region of India. Rajiv Gandhi University. https://shodhganga.inflibnet.ac.in/handle/10603/508579
Taram, M., Borah, D. 2024 New distributional record of Henckelia monantha (Gesneriaceae) from India. Lilloa 61: 159–165.
DOI: 10.30550/j.lil/1922View Article
Google Scholar
Taram, M., Borah, D., Tag, H. 2025 Two new records of Henckelia for India from Arunachal Pradesh. Vegetos 38(3): 1080–1084.
DOI: 10.1007/s42535-024-00905-4View Article
Google Scholar
Wang, W.T., Pan, K.Y., Li, Z.Y. 1998 Gesneriaceae. In: Z. Y. Wu and P. H. Raven (eds.) Flora of China. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, pp. 311–345.
Weber, A., Burtt, B.L. 1997 Remodelling of Didymocarpus and Associated Genera (Gesneriaceae). Beitr. Biol. Pflanzen. 70: 293–363.
Weber, A., Middleton, D.J., Forrest, A., Kiew, R., Lim, C.L., Rafidah, A. R., Sontag, S., Triboun, P., Wei, Y.-G., Yao, T.L., M?ller, M. 2011 Molecular systematics and remodelling of Chirita and associated genera (Gesneriaceae). Taxon 60(3): 767–790.
DOI: 10.1002/tax.603012View Article
Google Scholar
Wood, D. 1974 A revision of Chirita (Gesneriaceae). Notes Roy. Bot. Gard. Edinburgh 33: 123–205.
DOI: 10.24823/nrbge.1974.2973View Article
Google Scholar
Yang, B., Ding, H.-B., Fu, K.-C., Yuan, Y.-K., Yang, H.-Y., Li, J.-W., Zhang, L.-X., Tan, Y.-H. 2019 Four new species of Gesneriaceae from Yunnan, Southwest China. PhytoKeys 130: 183–203.
DOI: 10.3897/phytokeys.130.34001View Article
Google Scholar

