Sonerila longipedunculata sp. nov., a new species of Melastomataceae from the southern Western Ghats, India, with additional notes and lectotypification of Sonerila travancorica

  • Sekarathil Resmi Department of Botany, University of Calicut, Malappuram District, Kerala – 673 635, India
  • Santhosh Nampy Department of Botany, University of Calicut, Malappuram District, Kerala – 673 635, India
Keywords: Sonerileae, Kerala, Sonerila longipetiolata, tuberous, South Wayanad forest division


A new species of Melastomataceae, Sonerila longipedunculata Resmi & Nampy sp. nov., is described from the southern Western Ghats, India. It is morphologically close to S. travancorica, but differs by the tuberous root stock, fleshy stems, ovate to cordate lamina, longer, angular peduncles, 3-ribbed hypanthium, ovate-elliptic petals, acute anthers, and 3-ribbed capsules. Detailed description, distribution map, and photographic images are provided. The morphological differences with relevant species are discussed. The status of the new species is provisionally assessed here as ‘critically endangered’ according to IUCN Red List Categories and Criteria. The name Sonerila travancorica is lectotypified and its identity is discussed. The status of Sonerila longipetiolata is discussed and is synonymised under S. travancorica.


Beddome R.H. 1871. Icones plantarum Indiae Orientalis: or Plates and Descriptions of New and Rare Plants, from Southern India and Ceylon. Gantz Brothers, Mandras.

Cellinese N. 1997. Notes on the systematics and biogeography of the Sonerila generic alliance (Melastomataceae) with special focus on fruit characters. Tropical Biodiversity 4 (1): 83–93.

Cho S.H., Lee J.H., Won H., Phourin C. & Kim Y.D. 2015. Sonerila bokorense (Melastomataceae), a new species from Cambodia. Phytotaxa 222 (4): 295–299.

Clarke C.B. 1879. Sonerila. In: Hooker J.D. (ed.) The Flora of British India Vol. 2: 529–540. L. Reeve & Co., London.

Cogniaux A.C. 1891. Sonerila (Melastomataceae). In: Candolle A.P. de & Candolle C. de (eds) Monographiae Phanerogamarum Vol. 7: 490–516. G. Masson, Paris.

Forman L. & Bridson D. 1989. The Herbarium Handbook, 1st Edition. Royal Botanic Gardens, Kew.

Gamble J.S. 1919. Flora of the Presidency of Madras Vol. 1: 497–500. Adlard & Son Limited, London.

IUCN Standards and Petitions Committee. 2019. Guidelines for using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from [accessed 20 Jun. 2020].

Josephine M.M., Manickam V.S., Murugan C., Sundaresan V. & Jothi G.J. 2003. Sonerila longipetiolata Manickam et al., a new species of Melastomaceae from Tamil Nadu, India. Journal of the Bombay Natural History Society 100 (1): 81–83.

Lundin R. 1983. Taxonomy of Sonerila (Melastomataceae) in Ceylon. Nordic Journal of Botany 3: 633–656.

Manickam V.S., Murugan C. & Jothi G.J. 2008. Flora of Tirunelveli hills Vol. 1 Polypetalae: 410–415. Bishen Singh Mahendra Pal Singh, Dehra Dun.

Mohanan M. & Henry A.N. 1994. Flora of Thiruvananthapuram: 199–202. Botanical Survey of India, Kolkata.

Mohanan N. & Sivadasan M. 2002. Flora of Agasthyamala: 282–285. Bishen Singh Mahendrapal Singh, Dehra Dun.

Nair N.C. & Henry A.N. 1983. Flora of Tamil Nadu, India. Series I: Analysis: 163–165. Botanical Survey of India, Southern Circle, Coimbatore.

Narayanan R.M.K., Sunil C.N., Nandakumar M.K., Shaju T., Mini V., Satheesh K.T. & Balakrishnan V. 2014. Sonerila raghaviana sp. nov. (Melastomataceae), a new species from southern Western Ghats of Karnataka, India. International Journal of Advanced Research 2: 772–777.

Pham H.H. 2003. An Illustrated Flora of Vietnam Vol. 2: 90–92 & 775–777. Young Publishing House, Ho Chi Minh.

QGIS Quantum GIS Development Team. 2020. Quantum GIS geographic information system. Version 3.12.2.

Resmi S. & Nampy S. 2018. Lectotypification of four names in Sonerila (Melastomataceae). Phytotaxa 375 (2): 165–170.

Resmi S., Manudev K.M., Pramod C. & Nampy S. 2018. A new species of Sonerila (Melastomataceae: Sonerileae) from southern Western Ghats, India. Phytotaxa 333 (2): 235–242.

Ridley H.N. 1912. New and Rare Malayan Plants (Series VI.). Journal of the Straits Branch of the Royal Asiatic Society 61: 1–43.

Stafleu F.A. & Cowan R.S. 1976. Taxonomic Literature: A Selective Guide to Botanical Publications and Collections with Dates, Commentaries and Types, Second Edition Vol. 1: A–G. Regnum Vegetabile 94. Bohn, Scheltema & Holkema, Utrecht.

Stapf O. 1892. On the Sonerileae of Asia. Annals of Botany (Oxford) 6: 291–323.

Stearn W.T. 1992. Latín Botánico: Historia, Gramática, Sintaxis, Terminología y Vocabulario. Omega, David & Charles, London.

Thiers B. continuously updated. Index Herbariorum: A Global Directory of Public Herbaria and Associated Staff. New York Botanical Garden’s Virtual Herbarium. Available from [accessed 20 Jun. 2020].

Triana J.J. 1871. Les Melastomacées. Transactions of the Linnean Society of London 28: 1–188.

Turland N.J., Wiersema J.H., Barrie F.R., Greuter W., Hawksworth D.L., Herendeen P.S., Knapp S., Kusber W.-H., Li D.-Z., Marhold K., May T.W., McNeill J., Monro A.M., Prado J., Price M.J. & Smith G.F. 2018. International Code of Nomenclature for Algae, Fungi, and Plants (Shenzhen Code) Adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Koeltz Botanical Books, Glashütten.

Van Dang S., Nguyen H.Q., Pham H.D., Pham V.N., Mai T. & Hoang N.S. 2016. Two new records for the flora of Vietnam: Sonerila (Melastomataceae) and Erycibe (Convolvulaceae). Plant Science Today 3 (4): 349–353.

Vogel E.F. de 1987. Guidelines for the preparation of revisions. Manual of herbarium taxonomy theory and practice. UNESCO, Jakarta.

How to Cite
Resmi, S., & Nampy, S. (2021). Sonerila longipedunculata sp. nov., a new species of Melastomataceae from the southern Western Ghats, India, with additional notes and lectotypification of Sonerila travancorica. European Journal of Taxonomy, 733(1), 160-174.
Research article