Taxonomy

Psychotria xaracuensis Barrabé, sp. nov. ined., {Barrabé 935 / Munzinger 4807}
endemique
protegee
UICN

Red List Status -

Endangered (EN) , assessed in 15/09/2016

Protected species -

in Southern Province

Psychotria sp. nov. "xaracuensis" is an endemic shrub of New Caledonia, known from Monéo to Prokoméo in the North of Grande Terre. It occurs in shrubland or forest on ultramafic substrate at an altitudinal range 20-980 m asl. Main identified threats are linked to on-going mining activities. Its area of occupancy (AOO) and extent of occurrence (EOO) being respectively estimated to 48 and 397 km², while the number of locations are estimated to be five: Monéo, Poro, CFTMC (SLN), Kouaoua (SLN), Prokoméo. Psychotria sp. nov. "xaracuensis" is therefore assessed as Endangered (EN) with criteria B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) with a continuing decline of all concerned sub-criteria.

Geographical area


Psychotria sp. nov. "xaracuensis" is an endemic shrub of New Caledonia, known from Monéo to Prokoméo in the North of Grande Terre.

Population


It is known from four sub-populations : Monéo, Poro, Ménazi,Prokoméo.

Habitat


Psychotria sp. nov. "xaracuensis" occurs in shrubland or forest on ultramafic substrate at an altitudinal range 20-980 m asl.

Threats


Main identified threats are linked to on-going mining activities: Kouaoua (SLN), CFTMC (SLN).

Conservation


Psychotria sp. nov. "xaracuensis" is unprotected by legislation and it does not occur in any protected area. This species would benefit from ex-situ and in-situ emergency conservation actions. It is proposed to ensure the follow-up of known sub-populations, to preserve a viable population on delimited perimeters on the mining area.

Bibliography


Barrabé L, Maggia L, Pillon Y, Rigault F, Mouly A, Davis AP, Buerki S 2014. New Caledonian lineages of Psychotria (Rubiaceae) reveal different evolutionary histories and the largest documented plant radiation for the archipelago. Molecular Phylogenetics and Evolution(71) , p.15-35.

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.

Barrabé L. 2013. Systématique et Evolution du genre Psychotria (Rubiaceæ) en Nouvelle-Calédonie.

Experts


Assessor(s): Barrabé, L., Amice, R., Bruy, D., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Hequet, V., Maura, J., McCoy, S., Suprin, B., Vandrot, H., Veillon, J.

Reviewer(s): Lannuzel, G., Tanguy, V.

Facilitator(s): Tanguy, V., Ramon, L., Maura, J., Warimavute, G.


Geographical distribution