Taxonomy
Red List Status -
Data Deficient (DD) , assessed in 10/09/2015Protected species -
in Northern ProvinceMedicosma exigua is a narrow endemic shrub restricted to the north-west of Grande Terre in New Caledonia. This species is insufficiently known. It could be composed by three sub-populations (Koumac, Ouazangou, Koniambo) which are areas threatened by mining operations. It is found in shrubland and remanant forest on an ultramafic substrate. This taxon is insufficiently collected and not well known. Medicosma exigua is therefore assessed as Data Deficient (DD) for taxonomic and provenance reasons.
Geographical area
Medicosma exigua is a narrow endemic shrub restricted to the north-west of Grande Terre in New Caledonia.It could be composed of three sub-populations (Koumac, Ouazangou, Koniambo).
Population
Population size is unknown.
Habitat
Medicosma exigua is found in shrubland and remanant forest on an ultramafic substrate.
Threats
Medicosma exigua could be found in areas threatened by mining operations.
Conservation
The genus Medicosma should be taxonomically clarified in order to be able to assess the extinction risks of this species.
Bibliography
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Wulff AS, Hollingsworth PM, Ahrends A, Jaffré T, Veillon J-M, L’Huillier L, et al. 2013. Conservation Priorities in a Biodiversity Hotspot: Analysis of Narrow Endemic Plant Species in New Caledonia.
L'Huillier L.; Jaffré T. and Wulff A. 2010. Mines et Environnement en Nouvelle-Calédonie : les milieux sur substrats ultramafiques et leur restauration.
Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M. and Chalopin, M. 2012. Le référentiel taxonomique Florical et les caractéristiques de la flore vasculaire indigène de la Nouvelle-Calédonie [The taxonomic database « FLORICAL » and characteristics of the indigenous flora of New Caledonia]. Adansonia sér 3(34) , p.177-219.
Experts
Assessor(s): Tanguy, V., Veillon, J., Amice, R., Barrière, R., Fleurot, D., Gailhbaud, P., Garnier, D., Suprin, B.
Reviewer(s): Vandrot, H.
Contributor(s): Wulff, A.
Facilitator(s): Tanguy, V., Chanfreau, S.