''Karrabina biagiana'' is a species of large rainforest trees commonly known as northern brush mahogany, northern brush mararie or red carabeen, in the plant family Cunoniaceae. This species used to be placed in the genus ''

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 en ...

'' as ''Geissois biagiana''. These trees are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the wet tropics rainforests of northeastern

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

, Australia. Within the Wet Tropics region they occur widely in the mature, luxuriant tropical rainforests, from approximately altitude and have greater abundance along streamlines. Mature trees have large buttresses and grow to over tall. The compound leaves occur opposite each other and consist of three large toothed leaflets measuring . Large prominent stipules occur at the points of attachment of the leaves to the stem. New growth has showy bright red leaves and stems. Near or at the ends of growing new branches, compound racemose

inflorescences An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...

bloom many individual small cream flowers, each measuring diameter. Capsules covered in short hairs, measuring long, open when ripe, releasing many small winged seeds. The timber has value for building purposes. The trees are becoming more well known in cultivation, for the striking foliage and blossom events.

References

{{Taxonbar, from1=Q65941551, from2=Q5530235 Trees of Australia Flora of Queensland biagiana Oxalidales of Australia Taxa named by Ferdinand von Mueller