Taxonomy

Dendrophyllanthus stipitatus (Schmid) R.W.Bouman
endemique
UICN

Synonyms

Phyllanthus stipitatus M.Schmid

Red List Status -

Endangered (EN) , assessed in 20/08/2020

Phyllanthus stipitatus is a shrub of 1.5-2 m high, endemic of New Caledonia and restricted to the north west of Grande Terre. The Tiébaghi subpopulation is probably extinct as it was not seen since 1996 despite prospections in the area. This species occurs in maquis and in forests undergrowth on ultramafic substrates between 20 and 980 m asl. The main identified threats are linked to habitat damage by uncontrolled bushfires and future mining activities at Boulinda. Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 583 km² and 24 km² while the number of locations is estimated to be 5. Using criterion B and with the estimation of a continuous decline of all the concerned subcriteria, Phyllanthus stipitatus is assessed as Vulnerable (VU) B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v).

Geographical area


Phyllanthus stipitatus is an endemic of New Caledonia and restricted to the north west of Grande Terre. The Tiébaghi subpopulation is probably extinct as it was not seen since 1996 despite prospections in the area.

Population


Population size is unknown.

Habitat


Phyllanthus stipitatus occurs in maquis and in forests undergrowth on ultramafic substrates between 20 and 980 m asl.

Threats


The main identified threats are linked to habitat damage by uncontrolled bushfires and future mining activities at Boulinda.

Conservation


Phyllanthus genus is protected by legislation in Province Nord. None of the subpopulations occur within a protected area. This species should benefit from in situ and ex situ emergency conservation actions. It is recommended to inform the DSCGR (emergency services), responsible for the coordination of the firefighting effort on the presence of the species in the concerned areas. It is moreover suggested to realise field surveys at Tiébaghi and better estimate its distribution range and population size.

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.

McPherson, G.; Schmid, M. 1991. Flore de la Nouvelle-Calédonie et dépendances. Volume 17 : Euphorbiaceae II Phyllanthaceae.

Experts


Assessor(s): Amice, R., Barrière, R., Butin, J., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Héquet, V., Laudereau, C., Vandrot, H., Veillon, J.

Reviewer(s): Lannuzel, G.

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


Geographical distribution