Leaves of M. quinquenervia were collected from January to October at seven different locations across New Caledonia: Yate, Mont Panie, Tiebaghi, Temrock, Farino, Martin and Mont Mou.

Niaouli essential oils from New Caledonia were classified into three chemotypes, using principal component analysis (PCA). Of these three chemotypes, found co-occurring in the harvesting locations across the island, chemotype 2, already characterized in Madagascar, is rich in 1,8-cineole (up to 80%) and is widespread (65.4% of the overall samples); chemotype 1 (24.8% of samples) is rich in terpinene derivatives; and chemotype 3 (9.8% of samples) is rich in alpha-pinene and viridiflorol.