Taxonomy
Synonyms
Mecodium leratii (Rosenst.) Copel.Red List Status -
Least Concern (LC) , assessed in 28/11/2018
Hymenophyllum leratii is an epiphytic fern on rotten tree's trunk, endemic of New Caledonia, with a scattered distribution between the south and the north east of Grande Terre. This species is locally common and abundant and is found in dense humid forest from 100 to 1,300 m asl. With an extent of occurrence (EOO) equal to 4,549 km² and an area of occupancy (AOO) of 64 km², H. leratii does not seem threatened and therefore is assessed as Least Concern (LC).
Geographical area
Hymenophyllum leratii is endemic to New Caledonia where it has a scattered distribution in Grande Terre, between the south (from La Thy to Parc des Grandes Fougères) and the north east (from Amoa to Mont Panié).
Population
Population size is unknown. Based on field observations, it is a locally common and an abundant species starting from 900 m.
Habitat
Hymenophyllum leratii is an epiphytic fern mainly on rotten tree's trunk which occurs in dense humid forest from 100 to 1,300 m asl.
Threats
This species does not seem to be threatened.
Conservation
Hymenophyllum leratii is not protected by legislation however it does occur in four protected areas: Parc des Grandes Fougères, Mont Panié, Aoupinié, Rivière bleue, Pic Ningua.
Bibliography
Del Rio, A. & al. 2017. Origins of the fern genus Hymenophyllum (Hymenophyllaceae) in New Caledonia: Multiple independent colonizations from surrounding territories and limited in situ diversification. Taxon(66(5)) , p.1041-1064.
Ebihara A.,Iwatsuki K., Ito M., Hennequin S., Dubuisson J.Y. 2007. A global molecular phylogeny of the fern genus Trichomanes (Hymenophyllaceae) with special reference to stem anatomy. Botanical Journal of the Linnean Society,(155(1)) , p.1-27.
Munzinger J., Morat Ph., Jaffré T., Gâteblé G., Pillon Y., Rouhan G., Bruy, D., Veillon J.-M., & M. Chalopin. 2019. FLORICAL: Checklist of the vascular indigenous flora of New Caledonia..
Ebihara A., Dubuisson J.-Y., Iwatsuki K., Hennequin S., Ito M. 2006. A taxonomic revision of Hymenophyllaceae. Blumea(51(2)) , p.221-280.
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Experts
Assessor(s): Amice, R., Butin, J., Garnier, D., Veillon, J., Fleurot, D., Laudereau, C., Suprin, B., Mandaoué, L.
Reviewer(s): Tanguy, V.
Contributor(s): Perrie, L., Rouhan, G.
Facilitator(s): Warimavute, G., Meyer, S.