Red List Status -

Critically Endangered (CR) , assessed in 27/10/2017

Protected species -

in Northern Province , in Northern Province

Medicosma latifolia is endemic to New Caledonia, known only from Baie Ugué, on the east coast of Grande Terre. This shrub is found in riverine forest on ultramafic substrate, M. latifolia occurs up to 50 m asl. Its extent of occurrence (EOO) and area of occupancy (AOO) are both estimated at 4 km², and it occurs in only one location. The main threat is uncontrolled fires. Therefore, M. latifolia is listed as Critically Endangered (CR) under criteria B1ab(iii,v)+2ab(iii,v).

Geographical area

M. latifolia is endemic to New Caledonia, whre it is only known from Baie Ugué on the east coast of Grande Terre.


Total population size in unknown, but recent field observations at baie Ugué indicate a healthy population with good regeneration.


M. latifolia occurs in riverine forest on ultramafic substrate up to 50 m asl.


The main threat is posed by uncontrolled bushfires.


M. latifolia is protected by legislation in Province Nord, but does not occur in any protected areas. This species would benefit from ex situ and in situ emergency conservation actions. It is recommended to monitor and preserve known populations, and to inform the local authority responsible for the coordination of the firefighting effort about the presence of the species in the concerned areas. It would also be advised to run multiplication tests in order to assist future planting operations. Finally, prospection at Cap Bocage and its surroundings (Baie Ugué and col de Hô) is needed to better estimate the size of the population and understand potential threats.

Bibliography 2016. Faune et Flore de Nouvelle-Calédonie.

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.

Lannuzel, G.; Gâteblé, G.; Fogliani, B. 2017. Etude des Espèces Rares et Menacées des sites miniers de la SMT.


Assessor(s): Amice, R., Barrière, R., Butin, J., Fleurot, D., Lagrange, A., Lannuzel, G., Letocart, I., Suprin, B.

Reviewer(s): Veillon, J.

Contributor(s): Russ, L.

Facilitator(s): Warimavute, G., Tanguy, V.

Geographical distribution