Acsmithia collina Hoogland

Red List Status -

Endangered (EN) , assessed in 21/07/2016

Protected species -

in Southern Province , in Northern Province

Spiraeanthemum collinum is an endemic shrub/small tree found in central Grande Terre in New Caledonia. This species is known from 4 massifs (Tchingou, Boulinda, MéMaoya, MéJéjéhari). It is found in altitudinal forest on ultramafic substrate. Main threats are potential mining activities in Boulinda. Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 1,009 km² and 32 km² while the number of locations are estimated to be four. Spiraeanthemum collinum is therefore assessed as Endangered (EN) with criteria B1ab(iii,v)+2ab(iii,v) with a continuing decline of habitat quality and number of mature individuals.

Geographical area

This species is restricted to central Grande Terre in New Caledonia where it is known from 4 massifs (Tchingou, Boulinda, MéMaoya, MéJéjéhari).


It is known from 4 subpopulations where it is probably not abundant.


It is found in altitudinal forest (750-1,150 m asl) on ultramafic substrate.


Main threats are potential mining activities in Boulinda.


This species is protected by legislation in Province Nord but does not occur in any protected area (although it is close to Nodéla reserve). It is recommended to carry ex-situ and in-situ conservation efforts, in particular : ensuring the follow-up of known sub-populations, seeds banking and preserving viable populations on delimited perimeters. Patches of humid forest on ultramafic substrates should be protected, as on Tchingou and MéMaoya (extension of Nodela reserve) massif which host several threatened species.


Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M. and Chalopin, M. 2012. The taxonomic database « FLORICAL » and characteristics of the indigenous flora of New Caledonia. Adansonia(334) , p.177-219. 2016. Faune et Flore de Nouvelle-Calédonie.

Helen Fortune Hopkins, Yohan Pillon, Ruurd Hoogland 2015. Flore de la Nouvelle-Calédonie : Cunoniaceae.

H. C. F. Hopkins, J. C. Bradford, B. Donovan, Y. Pillon, J. Munzinger, B. Fogliani 2015. Floral biology of the Cunoniaceae in New Caledonia and the role of insects, birds and geckos as potential pollinators.


Assessor(s): Pillon, Y., Bruy, D., Butin, J., Fleurot, D., Gâteblé, G., Hequet, V., Letocart, D., Letocart, I., Tanguy, V., Tiavouane, J., Tron, F.

Reviewer(s): Fogliani, B.

Contributor(s): Couhia, J., Brinkert, M., Fortune-Hopkins, H.

Facilitator(s): Tanguy, V., Maura, J.

Geographical distribution