Cyanothyrsus soyauxii Harms
Daniellia soyauxii is a tree that can grow 20 - 35 metres tall. The straight, cylindrical bole can be 70 - 120cm in diameter[
The tree is harvested from the wild for its wood, which is used locally and also traded.
Tropical Africa - Cameroon, Equatorial Guinea, Gabon, Congo, DR Congo.
Plateau rain forests on sandy soils[
]. Tropical rain forest, near water sources; at elevations from 30 - 420 metres[
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Although many species within the family Fabaceae have a symbiotic relationship with soil bacteria, this species is said to be devoid of such a relationship and therefore does not fix atmospheric nitrogen[
A brown, fragrant balsam or oleo-resin is obtained from the trunk[
]. It is used as an adulterant of copaiba balsam (from Copaifera species), as a material for torches, to fumigate closed areas etc[
]. The fresh material is obtained by cutting out square pieces of the bark, though most of it is obtained from the ground in a semi-fossilized state[
The heartwood is brown, sometimes with greenish-brown veins; it is not clearly demarcated from the 4 - 12cm wide band of sapwood. The texture is coarse; the grain straight or interlocked. The wood is light in weight, soft; it is not very durable, having a slight resistance to fungi and being susceptible to dry wood borers and termites. It seasons rapidly, with only a slight risk of checking or distortion; once dry it is moderately stable in service. The wood can be worked with ordinary tools, though they need to be kept very sharp because of the risk of fuzzy surfaces; nailing and screwing are good; gluing is correct, though assembling and gluing is sometimes difficult due to the warping of dried veneers. The wood is used for purposes such as boxes and crates, cheaper furniture, interior joinery, blockboard and veneer[
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