Calamus nicobaricus Becc. (1892:446)



Taxonomy & Nomenclature

Synonym/s: Calamus pseudorivalis Becc. in Ann. Roy. Bot. Gard. (Calcutta) 11(1): 222 (1908)


Regarded as a synonym of C. pseudorivalis by (Sreekumar & Henderson, 2014), but accepted by (POWO, 2024).


Conservation Status

Possibly Extinct or Possibly Extinct in the Wild (ex situ status uncertain) (Sreekumar & Hareesh, 2013; Senthilkumar et al., 2014) or Invalid (synonym) (Sreekumar & Henderson, 2014)


Not found in the wild in recent surveys (2010's) (Sreekumar & Hareesh, 2013; Senthilkumar et al., 2014), prior to the species' taxonomic status being questioned (Sreekumar & Henderson, 2014; contra POWO, 2024).



Nicobar Islands, India


Biology & Ecology










Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

Govaerts, R. and Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.

Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.

POWO. (2024). Calamus nicobaricus Becc. Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: [Accessed 8 February 2024]

Rao, C. Kameswara, Geetha, B. L. and Suresh, Geetha. (2003). Red List of Threatened Vascular Plant Species in India: Compiled from the 1997 IUCN Red List of Threatened Plants. ENVIS Centre on Floral Diversity, Botanical Survey of India, Kolkata. xxiv + 144 pp. [automatic download]

Renuka, C. (1995). A Manual of the Rattans of Andaman and Nicobar Islands.

Senthilkumar, U., Choudhary, R. K., Sanjappa, M., Narasimhan, D., Shaanker, R. Uma and Ravikanth, G. (2014). Livelihood and Revenue: Role of rattans among Mongoloid tribes and settlers of Andaman and Nicobar islands, India. Ethnobotany Research & Applications 12: 141-154. [automatic download]

Sreekumar, V. B. and Hareesh, V. S. (2013). Diversity, endemism and conservation of Indian palms, pp. 36-38. In: Proceedings of the 25th Kerala Science Congress.

Sreekumar, V. B. and Henderson, Andrew. (2014). Nomenclatural notes on Indian Calamus (Arecaceae). Phytotaxa 166(2): 145-149. [Abstract]

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp. [p. 731]


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