Crossosperma cauliflora is an endemic tree (6-8 m high) restricted in the north east of Grande Terre. It is known from 2 subpopulations: Plateau de Kokingone and Mont Aoupinié. This species occurs on dense humid forest on volcano-sedimentary substrates, from 500-600 m asl. This species is threatened by Rusa deer at Aoupinié and bushfires at Plateau de Kokingone which contribute to the decline of its habitat quality. Its extend of occurence (EOO) and area of occurrence (AOO) are estimated to be respectively 35km² and 12 km² with a number of locations equal to 2. Therefore C. cauliflora is considered Endangered (EN) under criteria B1ab(ii,iii,v)+2ab (ii,iii,v), with a decline of the concerned sub-criteria.

Geographical area

C. cauliflora is endemic to New Caledonia and it is known from 2 subpopulations, Plateau de kokingone and Mont Aoupinié, located in the north east of Grande Terre.

Population

Population size is unknown.

Habitat

C. cauliflora occurs in dense humid forest on volcano-sedimentary substrate, from 500-600 m asl.

Threats

C. cauliflora is threatened by Rusa deer (Rusa timorensis) at Aoupinié and bushfires at Plateau de Plateau de Kokingone which contribute to the decline of its habitat quality.

Conservation

Crossosperma cauliflora occurs only in Province Nord where it is protected by legislation. It does occur in only one protected area: Aoupinié. It is recommended to inform the DSCGR (emergency services), responsible for the coordination of the firefighting effort, and the Conservatoire d'espaces naturels de Nouvelle-Calédonie (New Caledonia natural spaces conservatory), which coordinates the New Caledonian Invasive Species Programme, on the presence of the species in the concerned areas. Prospection is also recommanded at Mont Aoupinié to relocate this species since its last observations from 1973.

Bibliography

Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.

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.

Hartley T.G. & Mabberley D.J. 1997. Five new rain forest genera of Australasian Rutaceae. Adansonia ser. 4(19(2)) , p.189-212.

Experts

Assessor(s): Amice, R., Butin, J., Cazé, H., Garnier, D., McCoy, S., Veillon, J., Gâteblé, G., Fleurot, D., Laudereau, C., Suprin, B., Héquet, V., Bruy, D., Vandrot, H.

Reviewer(s): Lannuzel, G.

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