Grevillea exul, commonly known as "Brosse à dents commune", is a shrub or tree growing up to 10 m high endemic from New Caledonia. It is widely distributed across the Grande Terre, from the southern limit at Dumbéa-Côte Oublié to the northern part at the limit Poindimié-Voh-Tiebaghi. It occurs in open shrubland on ultramafic substrate at an altitudinal range from 6 to 1,250 m asl. Some subpopulation may be impacted by uncontrolled bushfires and mining activities in the north west and in the south. However Grevillea exul is common and tends to be a pioneer species, resilient to bushfires and other natural disturbances. Therefore with an Area of Occupancy (AOO) and an Extent of Occurrence (EOO) equal to 708 and 12,620 km², respectively, Grevillea exul is not thought to approach the requirements for listing as threatened. It is listed as Least Concern (LC).

Geographical area

Grevillea exul, commonly known as Brosse à dents commune", is endemic to New Caledonia where it is widely distributed across the Grande Terre, from the southern limit area at Dumbéa-Côte Oublié to the northern part at the limit area of Poindimié-Voh- Tiebaghi.

Population

The population size is not known. However field observations indicate that the species is locally abundant.

Habitat

This species occurs in open shrubland on ultramafic substrate at an altitudinal range from 6 to 1,250 m asl.

Threats

Some subpopulation may be impacted by uncontrolled bushfires and mining activities in the north west and in the south. However Grevillea exul is common and tends to be a pioneer species, resilient to bushfires and other natural disturbances.

Conservation

Grevillea exul is not protected by legislation in New Caledonia but it does occur in several protected areas : Côte Oubliée, Forêt de Saille, Haute Dumbéa, la Dumbéa, Montagne des sources, Mont Humboldt, Mont Mou, Nodela.

Bibliography

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.

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

Pauline Majourau, Yohan Pillon. 2020. A review of Grevillea (Proteaceae) from New Caledonia with the description of two new species.. Phytotaxa(477) , p.243-252.

Virot, R. 1968. Flore de la Nouvelle Calédonie et dépendances. Volume 02 : Protéacées.

Munzinger J., Morat Ph., Jaffré T., Gâteblé G., Pillon Y., Rouhan G., Bruy, D., Veillon J.-M., & M. Chalopin 2020. FLORICAL: Checklist of the vascular indigenous flora of New Caledonia [continuously updated].

Experts

Assessor(s): Amice, R., Bruy, D., Cazé, H., Fleurot, D., Gâteblé, G., Lannuzel, G., Laudereau, C., Vandrot, H., Pillon, Y.

Reviewer(s): Eltabet, N.

Facilitator(s): Warimavute, G., Meyer, S.