Log Description

Family Leguminosae ( Mimosaceae)
Botanical Names Zygia racemosa
Continent Latin America
CITES (Washington convention of 2017)
No trade Restrictions
Diameter 25 to 60 cm
Thickness of Sapwood 2 – 3 cm
Buoyancy Does not float
Log Conservation Moderate (treatment recommended)

Wood Description

Reference colour Sapwood Texture Grain Interlocked grain Notes
Orange Yellow Not clearly demarcated Medium Straight or interlocked Slight Heartwood with irregular dark brown veins. These veins are not present in sapwood. Sometimes wavy grain

Flat Sawn

Quarter Sawn

Physical and Mechanical properties

Property Mean Value
Density* 1.03
Monnin hardness* 10.6
Coefficient of volumetric shrinkage 0.74 % per %
Total tangential shrinkage (Ts) 10.5 %
Total Radial shrinkage (Rs) 6.0 %
T/R anisotropy ratio 1.8
Fibre Saturation point 28 %
Thermal conductivity 0.33 W/(m.K.)
Lower heating value _
Crushing strength* 83 MPa
Static bending strength* 150 MPa
Longitudinal modulus elasticity* 27,030 MPa
* At 12% moisture content, with 1Mpa = 1N/mm2

Natural durability & Treatability

Resistance to decay Class 3 – moderately durable
Resistance to dry wood borers Class S – suspectible (risk in all the wood)
Resistance to termites Class D – durable
Treatability Class 3 – poorly treatable
Use class covered by natural durability Class 2 – inside or under cover (dampness possible)

Preservation Treatment

Against dry wood borer attacks. This wood requires appropriate preservation treatment.
In case of temporary humidification This wood requires appropriate preservation treatment.
In case of permanent humidification Use of this wood is not recommended

Sawing and Machining

Blunting effect Fairly high
Tooth for sawing Stellite-tipped
Machining tools Tungsten carbide
Suitability for peeling Not recommended or without interest
Suitability for slicing Good
Notes Difficulties due to hardness and interlocked grain


Drying rate Normal to slow
Risk of distortion Slight risk
Risk of case hardening No known specific risk
Risk of checking High risk
Risk of collapse No known specific risk
Suggested drying schedule Schedule #7


Nailing/ Screwing Good but pre – boring necessary.
Notes Very high specific gravity: important that gluing be performed in compliance with the code of practice and instructions for the glue used.

Cross sections of Buchenavia fanshawei

Commercial Grading

Sawn timber appearance grading

According to NHLA grading rules (2015) Possible grading: FAS, Select, Common 1, Common 2, Common 3 In Guyana , the local name of this species is Bois serpent. Grading is done according to local rules Bois guyanais classes (1990) Possible grading : Choice1, Choice 2, Choice 3, Choice 4.

Fire Safety

Conventional French grading Thickness > 14 mm: M3 (moderately inflammable)
Thickness < 14 mm: M4 (easily inflammable)
Euroclass grading Default grading for solid wood that meets requirements of European standard NF EN 14081-1 (April 2016): structural graded timber in vertical uses and ceilings with minimal mean density of 0.35 and minimal thickness of 22 mm.

Main End uses

  • Turned goods
  • Cabinetry (high-end furniture)
  • Panelling
  • Built- in furniture or mobile item
  • Flooring
  • Sliced veneer
  • Marquetry
  • Hydraulic works (seawater)