Taxonomy
Common name :
Brosse à dents du Sud / Brosse à dents à feuilles rousses
Synonyms
Grevillea rubiginosa var. angustifolia Guillaumin • Hakea rubiginosa (Brongn. & Gris) Christenh. & ByngRed List Status -
Least Concern (LC) , assessed in 19/11/2021
Grevillea rubiginosa, commonly known as "Brosse à dents du sud or Brosse à dents à feuilles rousses", is a shrub or subshrub endemic to New Caledonia. It is restricted to the southern ultramafic massif (Massif du Grand Sud) of the Grande Terre, from the far south of the massif to the upper limit of Dumbéa-Mt. Humboldt-Thio area. There was an observation from Germain at Ile des Pins but it has not been seen since 1874. This species occurs in scrubland on ultramafic substrate at an altitudinal range of 10 to 1,264 m asl. Some subpopulations may be impacted by mining activities at Goro and Ada massifs and uncontrolled bushfires. However this species is very common and does not seem to be threatened. Therefore with an Area of Occupancy (AOO) and an Extent of Occurrence (EOO) equal to 406 and 2,555 km², respectively, Grevillea rubiginosa is not thought to approach the requirements for listing as threatened. It is listed as Least Concern (LC).
Geographical area
Grevillea rubiginosa is endemic to New Caledonia where it is restricted to the southern ultramafic massif (Massif du Grand Sud) of the Grande Terre, from the far south of the massif to the upper limit of Dumbéa-Mt. Humboldt-Thio area. There was an observation from Germain at Ile des Pins but it is not seen since 1874.
Population
The population size is not known. However field observations indicate that the species is very common.
Habitat
This species occurs in scrubland on ultramafic substrate at an altitudinal range of 10 to 1,264 m asl.
Threats
Some subpopulation may be impacted by uncontrolled bushfires and by mining activities at Goro and Ada massifs. However Grevillea rubiginosa is very common and tends to be a pioneer species, resilient to uncontrolled bushfires and other natural disturbances.
Conservation
Grevillea rubiginosa is not protected by legislation in New Caledonia but it does occur in several protected areas : Mont Humboldt, la Dumbéa, Massif du Kouakoué, Rivière bleue, Vallée de la Thy, Côte Oubliée, Haute Dumbéa, Haute Yaté. It is recommended to realise prospections at Ile des Pins to confirm its presence there.
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.
Virot, R. 1968. Flore de la Nouvelle Calédonie et dépendances. Volume 02 : Protéacées.
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.
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].
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
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): Meyer, S., Warimavute, G.