Taxonomy

endemique
protegee
UICN

Synonyms

Oxera nuda VirotOxera schimperi Vieill. ex Guillaumin

Red List Status -

Data Deficient (DD) , assessed in 08/09/2017

Protected species -

in Northern Province

Oxera baladica is a shrub or small monocaulous tree endemic to New Caledonia. Under current delimitation, this taxon is largely distributed in Grande Terre and Belep islands and occurs in low dense humid forest and shrubland on different substrates (ultramafic, volcano-sedimentary and calcareous rocks). Its extent of occurrence (EOO) and area of occupancy (AOO) are estimated at 200 and 11,090 km², respectively. However, due to taxonomic doubts, this species is considered Data Deficient (DD).

Geographical area


Under current delimitation, this endemic taxon of New Caledonia is largely distributed in Grande Terre and Belep islands.

Population


Population size is unknown.

Habitat


O. baladica occurs in dense humid forest and scrubland on various substrates (ultramafic, volcano-sedimentary and calcareous rocks) up to 500 m asl.

Threats


Potential threats are mining activities at Vulcain (SMGM), Poum (SLN) and Tiebaghi (SLN), Rusa deer (Rusa timorensis) in Koumac, Ouitchambo and Nessadiou and fires on the Belep islands, as well as low-altitude populations on the west coast).

Conservation


This species is not protected by any legislation in New Caledonia and does not occur in any protected areas. This species is cultivated at the IAC (Institut Agronomique de Nouvelle-Calédonie) nursery of Saint-Louis with only a few number of individuals. Taxonomic studies are in progress to clarify this probable complex of species.

Bibliography


Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.

Gâteble G. 2016. Flore ornementale de Nouvelle-Calédonie.

Mabberley DJ, de Kok RPJ. 2004. Labiatae. In: Morat P,ed. Flore de la Nouvelle-Calédonie et dépendance.

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.

Barrabé L, Karnadi-Abdelkader,G, Ounemoa,J,de Kok RPJ., Robert N, Gâteble,G. 2015. Recircumscription of Oxera (Lamiaceae: Ajugoideae) ta include Faradaya based on molecular and anatomical data. Botanical Journal of the Linnean Society(179) , p.693-711.

Experts


Assessor(s): Gâteblé, G., Barrabé, L., Fleurot, D., Amice, R., Cazé, H., Bruy, D., Hequet, V., Vandrot, H., Butin, J., Mandaoué, L., Haverkamp, C., Dumontet, V., Laudereau, C.

Reviewer(s): Meyer, S.

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


Geographical distribution