All species formerly considered to belong to the genus Sclerolobium have been moved to Tachigali in line with the treatment by Henk van der Werff in 'A Synopsis of the Genus Tachigali (Leguminosae; Caesalpinioideae) in Northern South America', Annals of the Missouri Botanical Garden Vol. 95, pp 618 - 660, 2008.
Sclerolobium paniculatum Vogel
Drawing of the leaves, flowers, fruit and seed
Photograph by: Martius, C., Eichler, A.G., Urban, I., Flora Brasiliensis, vol. 15(2): fasicle 50, t. 12 (1870)
Tachigali vulgaris is a tree with a spreading crown; it can grow to about 14 metres tall. The straight, cylindrical bole can be free of branched for up to 5 metres, up to 18cm in diameter[
The tree is harvested from the wild for local use of its wood.
S. America - Brazil, Bolivia, Peru, Surinam.
Fairly dense forests at elevations around 450 metres in northern Peru[
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This species has a symbiotic relationship with certain soil bacteria; these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
The heartwood is pinkish brown with a grayish tinge; it is not sharply defined from the pale pinkish sapwood with its darker brown veining of vessel lines. The texture is rather coarse; the grain straight; there is no distinctive odour or taste. The wood is moderately heavy; rather tough; strong; probably durable. Although slightly fibrous, it is not difficult to work, and holds its place fairly well[
]. It is used locally for house posts and in the construction of huts[
The trees of many members of this genus yield a wood suitable for light construction, known in the trade as 'tachi'[
]. We do not have any more specific information for the wood of this species, but a general description of tachi wood is as follows:-
The wood is light brown; it is clearly demarcated from the 3 - 6cm wide band of sapwood. The texture is medium; the grain straight or slightly interlocked. The wood is light to moderately heavy; soft to moderately hard; not very durable in one report[
], durable in another[
]. It seasons at a nornal rate with only a slight risk of distortion, but a high risk of checking; once dry it is poorly stable in service. It is fairly easy to work, but sawn surfaces can be somewhat fuzzy - stellite-tipped and tungsten carbide tools are recommended; nailing and screwing are good, but require pre-boring. The wood is used for purposes such as interior panelling and joinery, furniture components, light carpentry, crates and boxes[
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