Light Bosse
Guarea cedrate Pellegr.
Guarea laurentii De Wild.
Dark Bosse
Guarea thompsonii Sprague

West Africa - Central Africa

G. Cedrata
Ivory Coast : BOSSE
Ghana : KWABOHORO
Nigeria : OBOBO NOFUA
Kenya : -
Zaire : BOSASA
W. Germany : BOSSE
Great Britain : SCENTED GUAREA

G. Thompsonii
Ivory Coast : MUTIGBANAYE
Ghana : -
Nigeria : OBOBO NEKWI
Kenya : BOLON
Zaire : DIAMPI
W. Germany : DIAMPI
Great-Britain : BLACK GUAREA

Nota : G. cedrata is lighter (LIGHT BOSSE) than G. thompsonii (DARK BOSSE)

Pf. = IMP. Ex. = REGUL.

• Colour : Pinkish brown (G. c.) to orange barown (G. th.)
• Grain : Straight to slightly interlocked
• Texture : Fine medium
• Silver figure : Fine (barely visible)
• G. thompsonii tends to be straighter in grain than G. cedrata.

• Green weight (kg/m3) = G. cedrata 850 - 950
  G. thompsonii 950 - 1000
• Specific gravity at 12% M.C. (kg/m3) MV12 =
  G. cedrata (medium) 600
  G. thompsonii (medium) 650
• Volumetric swelling for 1% MC variation V%
  G. cedrata (small) 0.42
  G. thompsonii (small) 0.49
• Total tangential swelling T% = 7.1
• Total radial swelling R% = 4.5
• Crushing strength (N/mm2) C12 = 50
• Static bending strength (N/mm2) F12 = 140
• Modulus of elasticity (N/mm2) E12 = 10700

• Plywood
• High-class joinery and interior fittings
• Furniture
• Decorative sliced veneers
• Turnery
• Exterior joinery
• Boat building

• Natural durability : Moderate to durable
• Lyctus susceptibility : No
• Preservative treatment : Resistant
• Other remarks :
  - G. cedrata has a pleasant cedar scent that tends to disppear in time. No odour with G. thompsonii.
  - An alternative to CEDRO (cedrela odorata) for cigar boxes.
  - A substitute for SIPO for exterior joinery (windows).