''Geissois'' is a genus of trees and

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s in the plant family

Cunoniaceae Cunoniaceae is a family of 27 genera and about 335 species of woody plants in the order Oxalidales, mostly found in the tropical and wet temperate regions of the Southern Hemisphere. The greatest diversity of genera are in Australia and Tasmania ...

. It includes about 19 species mostly found in

New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...

, but also in

Fiji Fiji, officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about north-northeast of New Zealand. Fiji consists of an archipelago of more than 330 islands—of which about ...

Vanuatu Vanuatu ( or ; ), officially the Republic of Vanuatu (; ), is an island country in Melanesia located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of northern Australia, northeast of New Caledonia, east o ...

, and the

Solomon Islands Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, t ...

. Leaves are opposite, palmate with 3-9 leaflets, with entire margin (serrate in '' Geissois hirsuta'' and juveniles) and intrapetiolar stipules. The inflorescences are simple racemes (trident in '' Geissois hirsuta'') 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 A hyperaccumulator is a plant capable of growing in soil or water with high concentrations of metals, absorbing them through their roots, and concentrating extremely high levels of metals in their tissues. The metals are concentrated at levels th ...

(most species occurring on

ultramafic rock Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are usua ...

s) and one aluminum hyperaccumulator, '' Geissois polyphylla''. Two species from Australia formerly placed in this genus have now been transferred to the genus '' Karrabina''.

Species

New Caledonia * '' Geissois balansae'' * '' Geissois belema'' * '' Geissois bradfordii'' * '' Geissois hippocastanifolia'' * '' Geissois hirsuta'' * '' Geissois lanceolata'' * '' Geissois magnifica'' * '' Geissois montana'' * '' Geissois polyphylla'' * Geissois pruinosa ** var. ''intermedia'' ** var. ''pruinosa'' * ''

Geissois racemosa ''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 en ...

'' * '' Geissois trifoliolata'' * '' Geissois velutina'' Fiji * '' Geissois imthurnii'' * '' Geissois stipularis'' * '' Geissois superba'' * '' Geissois ternata'' Vanuatu * '' Geissois denhamii'' Solomon Islands (Temotu Province) * '' Geissois pentaphylla''

References

{{Taxonbar, from=Q5530239 Flora of New Caledonia Flora of Vanuatu Flora of Fiji Oxalidales genera Taxonomy articles created by Polbot