The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales.
Phelline is a genus of shrubs and the sole member of the family Phellinaceae, a family of flowering plants endemic to New Caledonia. It is placed in the order Asterales and is related to two other small plant families: Alseuosmiaceae and Argophyllaceae. It contains ten species.
Geissois is a genus of trees and shrubs in the plant family Cunoniaceae. It includes about 19 species mostly found in New Caledonia, but also in Fiji, Vanuatu, and the Solomon Islands. Leaves are opposite, palmate with 3-9 leaflets, with entire margin and intrapetiolar stipules. The inflorescences are simple racemes and bottle-brush like. The flowers have four red sepals, lacking petals, with many long red stamens. The fruit is a capsule, the seeds flat and winged. The genus includes several nickel hyperaccumulator and one aluminum hyperaccumulator, Geissois polyphylla.
Kermadecia is a genus of flowering plants in the family Proteaceae. The genus comprises five species of rainforeest trees fomr New Caledonia, Fiji, and Vanuatu. Its closest relative is Euplassa from South America.
Pancheria is a genus of shrubs and trees in the family Cunoniaceae. It is to endemic to New Caledonia and contains 27 species. Leaves or whorled, simple or pinnate. The flowers are arranged in capitula, fruits are follicular. The species are dioecious. The genus is well diversified on ultramafic rocks and some species are nickel hyperaccumulators. It is related to Cunonia and Pterophylla. It was named after Jean Armand Isidore Pancher.
Pancheria robusta is a species of shrub in the family Cunoniaceae. It is endemic to New Caledonia, where it is rare and found only on a few mountains.
Cunonia is a genus of shrubs and trees in the family Cunoniaceae. The genus has a disjunct distribution, with 24 species endemic to New Caledonia in the Pacific, and one species in Southern Africa. Leaves are opposite, simple or pinnate with a margin entire to serrate. Interpetiolar stipules are often conspicuous and generally enclose buds to form a spoon-like shape. Flowers are bisexual, white, red, or green, arranged in racemes. The fruit is a capsule opening first around the base then vertically, seeds are winged.
Oncotheca is a genus of tree endemic to New Caledonia. There are two species, Oncotheca balansae and Oncotheca humboldtiana.
Hedycarya is a genus of dioecious trees and shrubs of the family Monimiaceae. Species occur in South East Asia, New Caledonia, Australia and Polynesia including New Zealand. The genus was named and formerly described in 1776 by botanists Johann and Georg Forster in Characteres Generum Plantarum. The limit of the genus may require change as it appears paraphyletic in phylogenetic analyses, with the genera Kibaropsis and Levieria nested in it.
Arthroclianthus is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. Its 13–19 species are all endemic to New Caledonia. Its closest relatives include Nephrodesmus, also endemic to New Caledonia, Ohwia and Hanslia.
Emmenosperma is a small genus of mostly tropical trees in the family Rhamnaceae. The name comes from the Greek "emmeno" meaning and "sperma", (seed). It refers to the seeds remaining after the fruit valves have fallen away. It is related to Jaffrea, endemic to New Caledonia.
Codia is a genus of trees and shrubs in the family Cunoniaceae. The genus is endemic to New Caledonia in the Pacific and contains 15 species. The leaves are opposite or whorled, simple, and the margin usually entire. The flowers are arranged in capitula. the ovary is inferior. The fruit is indehiscent and is covered with woolly hairs.
Cossinia is a genus of four species of rainforest trees, constituting part of the plant family Sapindaceae. The genus has a disjunct distribution, occurring in Mascarene Islands, Australia, New Caledonia and Fiji.
Hooglandia ignambiensis is a species of trees in the family Cunoniaceae. It is endemic to New Caledonia and the only species of the genus Hooglandia. It is named after Dutch botanist Ruurd Dirk Hoogland.
Pycnandra acuminata is a species of plant in the family of Sapotaceae. It is a rainforest shrub, endemic to New Caledonia, and is adapted to the nickel-rich ultramafic soils found there. Pycnandra acuminata is notable as one of the most prolific hyperaccumulators of trace metals known, actively absorbing nickel from the soil and concentrating it within the plant to a concentration of up to 25% nickel citrate as dry weight of the sap, which is turquoise-green in colour due to the nickel content. the only known plant with turquoise sap. An excellent photo can be seen at. The vernacular name in French is sève bleue.
Maxwellia lepidota is a species of shrubs or trees in the family Malvaceae. It is endemic to New Caledonia and the only species of the monotypic genus Maxwellia. Its closest relatives are all Australian genera in tribe Lasiopetaleae: Guichenotia, Hannafordia, Lysiosepalum, Lasiopetalum and Thomasia.
Mangenotiella is a monotypic genus of shrub in the family Primulaceae. Its only species is Mangenotiella stellata, endemic to New Caledonia.
Gastrolepis is a genus of shrubs and trees in the family Stemonuraceae. The genus is endemic to New Caledonia in the Pacific and contains two species.
Pterophylla is a genus of trees of the family Cunoniaceae, with species found growing naturally in Madagascar, Malesia, Papuasia, and the Pacific Islands, formerly included in Weinmannia.
Pterophylla marquesana, formerly known as Weinmannia marquesana, is a species of plant in the family Cunoniaceae. It is a shrub or tree endemic to the Marquesas Islands of French Polynesia.
