Research Paper

A new species of Henckelia (Gesneriaceae) from Arunachal Pradesh, India

Gopal Krishna, Pakshirajan Lakshminarasimhan

Published on: 09 November 2018

Page: 397 - 401

DOI: 10.6165/tai.2018.63.397

Abstract

Henckelia pathakii G. Krishna & Lakshmin. sp. nov., is described and illustrated here from Upper Siang district of Arunachal Pradesh, India. It differs from its closely related species H. adenocalyx and H. grandifolia in having cupular bracts (vs. free and slightly connate at base) and glabrous (vs. densely hairy or sparsely pubescent), eglandular calyx. As it is narrowly confined to Upper Siang district of Arunachal Pradesh in a small population comprising about 20 individuals in a single location. The threat status of this new species is provisionally assessed here as “Critically Endangered” following the IUCN Red List Categories and Criteria version 3.1 (2012).

Keyword: Arunachal Pradesh, Gesneriaceae, Henckelia pathakii, India

Literature Cited

Clarke, C.B. 1883. Cyrtandreae. In: de Candolle, A.P. and de Candolle, C. (eds.), Monographiae Phanerogamarum, 5:109-131. G. Masson, Paris.

de Candolle, A.P. 1845. Cyrtandraceae. In: Prodromus Systematis Naturalis Regni Vegetabilis, 9: 258-286. Sumptibus Sociorum Treuttel & Wu?rtz, Paris.

IUCN 2012. IUCN Red List Categories and Criteria, ver. 3.1. ed.2. IUCN Red List Unit, Gland.

Janeesha, A.P. and S. Nampy. 2015. Henckelia bracteata, a new species of Gesneriaceae from southern Western Ghats, India, and lectotypification of Didymocarpus humboldtianus (H. humboldtiana). Willdenowia 45(1): 53-59.
DOI: 10.3372/wi.45.45105View Article Google Scholar

Kumar, E.S.S. 2014. A new combination in Henckelia (Gesneriaceae). Polish Bot. J. 59(1): 149.
DOI: 10.2478/pbj-2014-0002View Article Google Scholar

Manudev, K.M., A. Weber and S. Nampy. 2012. Henckelia pradeepiana, a new species of Gesneriaceae from southern Western Ghats, India. Rheedea 22(2): 119-123

Middleton, D.J., A. Weber, T.L. Yao, S. Sontag and M. M?ller. 2013. The current status of the species hitherto assigned to Henckelia (Gesneriaceae). Edinburgh J. Bot. 70(3): 385-404.
DOI: 10.1017/S0960428613000127View Article Google Scholar

M?ller, M., S. Nampy, A.P. Janeesha and A. Weber. 2017. The Gesneriaceae of India: Consequences of updated generic concepts and new family classification. Rheedea 27(1): 23-41.

Ranasinghe, S., R. Milne, R. Jayasekara, S. Rubasinghe and M. M?ller. 2016. Henckelia wijesundarae (Gesneriaceae), a new endemic species from Sri Lanka, and lectotypification of Chirita walkerae and C. walkerae var. parviflora. Willdenowia 46(2): 213-224.
DOI: 10.3372/wi.46.46202View Article Google Scholar

Sinha, B.K. and S. Datta. 2016. Taxonomic account on the family Gesneriaceae in Northeast India. Nelumbo 58: 1-43.
DOI: 10.20324/nelumbo/v58/2016/105932View Article Google Scholar

Weber, A., D.J. Middleton, A. Forrest, R. Kiew, C. Lu Lim, A.R. Rafidah, S. Sontag, P. Triboun, Yi-Gang Wei, T.L. Yao and M. M?ller. 2011. Molecular systematics and remodelling of Chirita and associated genera (Gesneriaceae). Taxon 60: 767-790.

Weber, A. and B.L. Burtt. 1998 (‘1997’). Remodelling of Didymocarpus and associated Genera (Gesneriaceae). Beitr. Biol. Pflanzen. 70: 293-363.

Weber, A., J.L. Clark and M. M?ller. 2013. A new formal classification of Gesneriaceae. Selbyana 31(2): 68-94.

Wood, D. 1974. A revision of Chirita (Gesneriaceae). Notes Roy. Bot. Gard. Edinburgh 33: 123-205.