Dialium macranthum A.Chev.
Dialium polyanthum Harms
Dialium yambataense Vermoesen
Dialium pachyphyllum is a tree that can grow 8 - 20 metres tall. The straight bole can be free of branches for 5 - 15 metres, up to 70cm in diameter, sometimes with slightly pronounced buttresses[
The tree produces a very heavy, durable timber and is commonly harvested from the wild for trade.
Tropical Africa - ?Nigeria, Cameroon, southern Central African Republic, Equatorial Guinea, Gabon, Congo, DR Congo, northern Angola.
Dense forests, on firm ground and in swamps[
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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[
The heart wood is light pinkish-brown to brown or red-brown, sometimes very dark; it is clearly demarcated from the 4 - 8cm wide band of sapwood. The texture is medium; the grain straight to entangled. The wood is heavy to very heavy, hard to very hard, elastic; it is very durable, even in fresh water, resisting attacts by fungi, dry wood borers and termites. The wood seasons slowly, with a high risk of checking or distortion; once dry it is poorly stable in service. It has a high blunting effect, stellite-tipped and tungsten carbide tools are recommended; nailing and screwing are good, but require pre-boring; gluing is correct. The wood is used for purposes such as construction (including in contact with fresh water), heavy flooring, turnery, railway sleepers, exterior panelling and joinery, sliced veneer[
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