Nauclea diderrichii from the Family Rubiaceae
Proliferation: tropical West Africa, from the Ivory Coast to Angola, to the east to Uganda. Other important commercial names: Badi (Ivory Coast), Opepe (Nigeria), Kusia (Ghana).
Workability: Bilinga is a medium-hard to very hard wood of a quality that is even better than beech and oak.
Usage: construction material for internal and external use, supporting components under average mechanical stress in harbours, mill decks, bridges, rafts, railway sleepers, noise barriers, dividing walls, fences, and normal or heavy duty floors.
Replacement: for external use as a replacement for other kinds of construction wood of similar density and durability such as white oak, Iroko/Kambala, Makoré and others.