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Mugonha
Breonadia salicina (Vahl) Hepper & Wood
RUBIACEAE
Matumi (South Africa); Adina (Uganda); Adina (Tanzania); Mulamandia (Kenya); Adina (Kenya); Muonha (Mozambique); Mugonha (Mozambique)
Nauclea microcephala Del.; Adina microcephala (Del.)Hiern; Adina lasiantha Schum.
The tree reaches a height of 32 m, with trunk diameters of 80 cm. The bole is straight and not always regular, medium to highly fluted, with buttresses.
Breonadia salicina is reported along water-courses and in gallery forest.
East and South Africa.
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Vestured pits. Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pi Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 2 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with distinctly bordered pits. Fibers with vestured pits.
Unrestricted
The heartwood is yellowish brown with dark veins, it is not clearly demarcated.
Straight or slightly interlocked, sometimes with an influence on further processing operations.
The wood is typically fine in texture.
The wood surface is described as low in luster.
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
1
Nearly impossible to treat with a too much low penetration of the preservative substances.
Ease of Drying: An extremely difficult timber to season. It dries slowly, develops small surface cracks and is susceptible to case-hardening stresses. Slow seasoning under cover in sheltered location gives the best result. Seasoning in log form followed by conversion and Drying Defects: Even under mild conditions, planks usually develops numerous surface cracks which may still increases on further drying. Thick scantlings are also liable to severe splitting. But in general, the timber does not warp. Kiln Schedules: In Malaysia kiln-drying schedules B or G are recommended depending upon wood density. To check case hardening, steam treatment at periodic intervals during kiln drying for as many as 2-4 hours each is recommended, depending upon the intensity of case hard
FR-13
Sawing of this species requires powerful equipment.
Not suitable for veneering.
Not suitable for veneering.
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Moderately easy; tools must be cautiously sharpened.
Moderately easy; tools must be cautiously sharpened.
Moderately easy; tools must be cautiously sharpened.
Moderately easy; tools must be cautiously sharpened.
Pre-boring is necessary.
Difficult to glue because of the extracts content.
Easy to perform; it gives good results.
Can be polished without surface preparation.
Working with hand tools is difficult.
EXTERIOR GENERAL, bridges, piers, HOUSING GENERAL, beams, joists, flooring, parquet, steps, panelling, OTHER AND MUSICAL INSTRUMENTS, handicrafts
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