Dypsis rivularis (Jum. & H.Perrier) Beentje & J.Dransf. (1995:232)



Taxonomy & Nomenclature

Synonym/s: Chrysalidocarpus rivularis Jum. & H.Perrier in Ann. Mus. Colon. Marseille, sér. 3, 1: 40 (1913)


Conservation Status

Rediscovered [by implication] (POWO, 2024) (see below)


Historically considered extinct by at least one source (fide Humphreys et al., 2019), it was treated as a synonym by Humphreys et al. (2019) and thus not a true extinction, but as the synonymy is homotypic the taxon is still valid. POWO (2024) has a colour photograph taken by Henk Beentje, implying that it has been rediscovered.





Biology & Ecology










Dransfield, John and Beentje, Henk Jaap. (1995). The Palms of Madagascar. Royal Botanic Gardens Kew and The International Palm Society, Richmond.

Dransfield, J. and Beentje, H. J. (1998). Dypsis rivularis. The IUCN Red List of Threatened Species 1998: e.T38560A10123183. Accessed on 11 February 2024.

Eiserhardt, Wolf L., Bellot, Sidonie, Cowan, Robyn S., Dransfield, John, Hansen, Lars Emil S. F., Heyduk, Karolina, Rabarijaona, Romer N., Rakotoarinivo, Mijoro and Baker, William J. (2022). Phylogenomics and generic limits of Dypsidinae (Arecaceae), the largest palm radiation in Madagascar. Taxon 71(6): 1170-1195.

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

Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Supplementary Dataset 1]

null. (1998). Dypsis rivularis. The IUCN Red List of Threatened Species 1998: e.T38560A10123241. Accessed on 11 February 2024.

Oldfield, S., Lusty, C. and MacKinven, A. (compilers). (1998). The World List of Threatened Trees. World Conservation Press, Cambridge, UK.

POWO. (2024). Plants of the World Online (online resource). Facilitated by the Royal Botanic Gardens, Kew, United Kingdom. Available at: [Accessed 5 June 2024]

Rakotoarinivo, M. and Dransfield, J. (2012). Dypsis rivularis. The IUCN Red List of Threatened Species 2012: e.T38560A2879255. Accessed on 11 February 2024.

Rakotoarinivo, Mijoro, Dransfield, John, Bachman, Steven P., Moat, Justin and Baker, William J. (2014). Comprehensive Red List Assessment Reveals Exceptionally High Extinction Risk to Madagascar Palms. PLoS ONE 9(7): e103684.

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.


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