Leichhardtia tylophoroides is an endemic shrub from New Caledonia where it has a scattered distribution across the Grande Terre as well as an isolated subpopulation at Ile des Pins. This species occurs in dense humid forest on volcano-sedimentary and calcareous substrates at an altitude range of 10 and 950 m asl. The subpopulations on La Foa - Canala region is highly threatened by Rusa deer (Rusa timorensis) and the nothern lower subpopulations are highly impacted bushfires, with some subopulations completly destroyed. Its distribution range could be larger given its discattered distribution. Therefore its area of occupancy (AOO) is estimated to be betwwen 50 and 100 km² and its extent of occurrence (EOO) is estimated to be between 6,000 and 10,000 km² and its number of location estimated to be eight. Therefore, Leichhardtia tylophoroides is considered Vulnerable VU B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) with a decline of all the concerned subcriteria.

Geographical area

Leichhardtia tylophoroides is endemic to New Caledonia where it has a scattered distribution across the Grande Terre as well as an isolated subpopulation at Ile des Pins.

Population

Population size is unknown.

Habitat

Leichhardtia tylophoroides occurs in dense humid forest on volcano-sedimentary and calcareous substrates at an altitude range of 10 and 950 m asl.

Threats

The subpopulation on La Foa - Canala region is highly threatened by Rusa deer (Rusa timorensis) and the nothern lower subpopulations are highly impacted bushfires, with some subopulations completly destroyed.

Conservation

Leichhardtia tylophoroides is not protected by legislation in New Caledonia and it does occur in two protected areas: Parc des Grandes Fougères, Aoupinié. This species should be included in Province Sud and Province Nord legislation for a better protection of the species. It is recommended to inform the DSCGR (emergency services), responsible for the coordination of the firefighting effort.

Bibliography

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

LIEDE-SCHUMANN S., MEVE U., GÂTEBLÉ G., BARRIERA G. & FICI S. 2020. Apocynaceae p.p., Phellinaceae, Capparaceae : Flore de la Nouvelle-Calédonie.

Boiteau Pierre avec collaboration de Lucie Allorge 1982. Flore de la Nouvelle Calédonie et dépendances. Volume 10 : Apocynacées.

Munzinger J., Morat Ph., Jaffré T., Gâteblé G., Pillon Y., Rouhan G., Bruy, D., Veillon J.-M., & M. Chalopin 2020. FLORICAL: Checklist of the vascular indigenous flora of New Caledonia [continuously updated].

Experts

Assessor(s): Amice, R., Bruy, D., Butin, J., Cazé, H., Fleurot, D., Héquet, V., Lannuzel, G., Laudereau, C., Mandaoué, L., Vandrot, H., Pillon, Y.

Reviewer(s): Veillon, J.

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