Abstract
Ammannia telanganensis (Lythraceae), a new species described from Telangana State, India based on morphological evidence. The species is closely allied to Ammannia cordata and A. prostrata but differs in a combination of characters, including oblong to lanceolate bracts with a cordate or truncate base, flowers arranged in pedunculate cymes with showy petals, and seeds with cerebriform testa ornamentation. A detailed morphological description, diagnostic notes, phenology, distribution, habitat, conservation status, and colour photographs are provided.
References
- Arnott, G.A.W. (1837) Catalogue of Indian Plants Catalogue of dried specimens of Indian plants distributed by Dr. R. Wight: Wight’s Catalogue (Lithographed in the hand writing of G.A. Walker-Arnott. pp. 1–64.
- Blatter, E. & Hallberg, F. (1918) A revision of the Indian species of Rotala and Ammannia. Journal of Bombay Natural History Society 26: 210–218.
- Clarke, C.B. (1879) Lythraceae. In: Hooker, J.D. (Ed.) Flora of British India. Vol. 2. L. Reeve and Co., London, pp. 565–581.
- Cook, C.D.K. (1996) Aquatic and Wetland Plants of India. Oxford University Press, New York, pp. 248–253. https://doi.org/10.1093/oso/9780198548218.001.0001
- De Wilde, W.J.J.O. & Duyfjes, B.E.E. (2014) Ammannia (Lythraceae) in Malesia. Blumea 59: 11–18. https://doi.org/10.3767/000651914X681676
- Dillwyn, L.W. (1839) A review of the reference of the references to the Hortus Malabaricus of Henry Van Rheede Van Draakenstein. Murray & Rees, Swansea. https://doi.org/10.5962/bhl.title.23066
- Gamble, J.S. (1919) Flora of Presidency of Madras. Vol 1(3). L. Reeve & Co., London, pp. 506–514.
- Graham, S.A. (1985) A revision of Ammannia (Lythraceae) in the Western Hemisphere. Journal of Arnold Arboretum 66: 395–420. https://doi.org/10.5962/bhl.part.13185
- Graham, S.A., Diazgranados, M. & Barber, J.C. (2011) Relationships among the confounding genera Ammannia, Hionanthera, Nesaea and Rotala (Lythraceae). Botanical Journal of the Linnean Society 166 (1): 1–19. https://doi.org/10.1111/j.1095-8339.2011.01126.x
- Immelman, K.L. (1991) Synopsis of the genera Nesaea and Ammannia (Lythraceae) in southern Africa. Bothalia 21 (1): 35–49. https://doi.org/10.4102/abc.v21i1.857
- Koehne, E. (1880) Lythraceae. 1. Rotala L. In: Engler, A. (Ed.) Botanische Jahrbücher für Systematik, Vol. 1. Engelmann, Leipzig, pp. 142–178.
- Koehne, B.A.E. (1903) Lythraceae. In: Engler, A. Das Pflanzenreich. Wilhem, Leipzig. Heft 17, IV 216. pp. 1–326.
- Lemiya, K.M. (2017) Comparative morphology, anatomy and molecular phylogeny of Ammannia L., Rotala L. and Nesaea Kunth (Lythraceae) in South India. University of Calicut, India. [PhD thesis; (unpublished)]
- Mathew, T.P. (1993) Taxonomic studies on the family Lythraceae in India. University of Calcutta, Kolkata, India. [PhD thesis; (unpublished)]
- Mathew, T.P., Nayar, M.P., Dash, S.S., Sinha, B.K. & Kumar, V.S. (2020) Lythraceae. In: Mao, A.A. & Dash, S.S. (Eds.) Flowering Plants of India: An Annotated Checklist (Dicotyledons). Vol 1. Botanical Survey of India, pp. 557–562.
- Panigrahi, S.G. (1979) Studies on generic delimitation on the four genera Rotala, Ammannia, Nesaea and Hionanthera (Lythraceae)—A Historical Survey. Bulletin of Botanical Survey of India 18: 178–193.
- Panigrahi, S.G. (1986) Seed morphology of Rotala L., Ammannia L., Nesaea Kunth and Hionanthera Fernandes & Diniz (Lythraceae). Botanical Journal of Linnaean Society 93: 389–403. https://doi.org/10.1111/j.1095-8339.1986.tb01033.x
- Poiret, J.L.M. (1810) Encyclopédie méthodique. Botanique. Paris, Liege, pp. 329.
- POWO (2026) Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Available from: https://powo.science.kew.org/ (accessed 10 February 2026)
- Prasanth, A. & Sardesai, M.M. (2025) A synopsis of genus Ammannia L. (Lythraceae) in India. Rheedea 35 (4): 232–254.
- Pullaiah, T., Ramamurthy, K.S. & Karuppusamy, S. (2007) Flora of Eastern Ghats: Hill Ranges of South East India. Regency publication, New Delhi.
- Roth, A.W. (1818) Ammannia densiflora. In: Roemer, J.J. & Schultes, J.A. (Eds.) Systema vegetabilium. Vol. 3. Cotta, Stuttgart, pp. 304.
- Roxburgh, W. (1820) Flora Indica: or Descriptions of Indian Plants. Vol. 1. W.Thacker, Serampore, 447 pp. https://doi.org/10.5962/bhl.title.589
- Verdcourt, B. (1994) Lythraceae. In: Pollhill, R.M. (Ed.) Flora of Tropical East Africa. East African Government, A.A. Balkema, Rotterdam, pp. 1–62.
- Verdcourt, B. (1995) Lythraceae. In: Dassanayake, M.D., Fosberg, F.R. & Clayton, W.D. (Eds.) A revised handbook to the Flora of Ceylon. Vol. 9. Oxford & IBH Publishing, New Delhi, 488 pp.
- Wight, R. & Arnott, G.A.W. (1834) Prodromus Florae Peninsulae Indiae Orientalis. Vol 1(2). Allen & Co, Parbury, pp. 302–307. https://doi.org/10.5962/bhl.title.252
