Taxonomy

endemique
protegee
UICN

Synonyms

Acianthopsis aegeridantennata (N.Hallé) Szlach.

Red List Status -

Endangered (EN) , assessed in 11/09/2015

Protected species -

in Northern Province , in Northern Province

Acianthus aegeridantennatus is an endemic geophyte orchid of New Caledonia, with a discontinuous distribution from Cap N'dua to Mt. Kaala on Grande Terre. A. aegeridantennatus occurs in shrubland on various substrates at an altitudinal range 35-550 m asl. According to field observations, total population size is estimated to be fewer than 2,500 mature individuals for a sub-population size fewer than 250 mature individuals. Due to threats of bushfires and wild pigs, population of A. aegeridantennatus is considered in continuous decline. Using criteria C, A. aegeridantennatus qualifies as Endangered (EN) C2a(i).

Geographical area


Acianthus aegeridantennatus is an endemic geophyte orchid of New Caledonia, with a discontinuous distribution from Cap N'dua to Mt. Kaala on Grande Terre.

Population


Within each station, A. aegeridantennatus constitutes little population of 3-4 mature individuals. According to those informations, total population size is estimated to be fewer than 2,500 mature individuals for a sub-population size fewer than 250 mature individuals.

Habitat


A. aegeridantennatus occurs in shrubland on various substrates at an altitudinal range 35-550 m asl.

Threats


A. aegeridantennatus is threatened by bushfires on Kaala, Tango, Port Boisé, col des Roussettes and Montagne des sources localities. Indeed bulbs do not grow deep enough in the soil and are thus unprotected against fire. On Tango locality, A. aegeridantennatus is also threatened by wild pigs.

Conservation


A. aegeridantennatus is protected by legislation in Province Nord and Province Sud and occurs in a few protected areas : réserve naturelle du Cap N’Dua, réserve intégrale de la Montagne des Sources, réserve naturelle de la Haute Dumbéa.

Bibliography


Hallé N.; Aubréville A.; Leroy J. F.; 1977. Flore de la Nouvelle-Calédonie et dépendances. Volume 8: Orchidaceae.

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.

Experts


Assessor(s): Butin, J., Laudereau, C., Amice, R., Cazé, H., Amice, R., Fleurot, D., Frayssinet, I., Garnier, D., Goxe, J., Gâteblé, G., Veillon, J., Villegente, J.

Reviewer(s): Tanguy, V.

Contributor(s): Faria, E.

Facilitator(s): Chanfreau, S.


Geographical distribution