Geissois

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 (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 (most species occurring on ultramafic rocks)^[2][3] and one aluminum hyperaccumulator, Geissois polyphylla.^[3]

Geissois
Geissois racemosa
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Oxalidales
Family:	Cunoniaceae
Genus:	Geissois Labill.[1]
Type species
Geissois racemosa Labill.[1]

Geissois racemosa wood - MHNT

Two species from Australia formerly placed in this genus have now been transferred to the genus Karrabina.^[1]

Species

New Caledonia [4] Geissois balansae Brongn. & Gris ex Guillaumin Geissois belema Pillon & H.C.Hopkins Geissois bradfordii H.C.Hopkins Geissois hippocastanifolia Guillaumin Geissois hirsuta Brongn. & Gris Geissois lanceolata (Guillaumin) H.C.Hopkins Geissois magnifica Baker f. Geissois montana Vieill. ex Brongn. & Gris Geissois polyphylla Lécard ex Guillaumin Geissois pruinosa Brongn. & Gris var. intermedia (Vieill. ex Pamp.) H.C.Hopkins & Pillon var. pruinosa Geissois racemosa Labill. Geissois trifoliolata Guillaumin Geissois velutina Guillaumin ex H.C.Hopkins

Fiji[5][6] Geissois imthurnii Turrill Geissois stipularis A.C.Sm. Geissois superba Gillespie Geissois ternata A.Gray Vanuatu[6] Geissois denhamii Seem. Solomon Islands (Temotu Province)[6] Geissois pentaphylla C.T.White