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MOENA NEGRA (Diospyros guianensis)
Trade Name
Moena negra
Scientific Name
Diospyros guianensis (Aubl.) Gurke
Family
EBENACEAE
Common Names
Moena Negra (Peru)
Scientific Name Synonyms
Paralea guianensis Aubl
Description Of The Tree
Botanical Description
It is reported to grow to heights of about 25 m, usually with trunk diameters from 50 to 60 cm. This species has straight, cylindrical boles, presenting small thick buttresses of about 50 cm high.
Natural Distribution
The geographical range for this species is the Peruvian Amazon forest. In Peru it grows in the departments of Loreto, Ucayali, Huanuco and Madre de Dios, in Loreto it is reported to be found in the margins of the Nanay river.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 150 to 200 micras (medium). Tangential diameter of vessel lumina 100 micras or less (very small). Vessels per mm2 less than 6 (rare). Simple perforation p Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. Axial paren Occasionally rays more than 10 per mm (abundant). Rays 1 to 2 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Fibers with distinctly bordered pits. Occasionally fibers with distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor and taste are indistinct.
Color
The sapwood is not clearly differentiated, the heartwood is pale brown when dry.
Grain
It has straight grain.
Texture
The texture of the wood is medium.
Luster
The wood surface is described as moderate in luster.
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.43
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.46
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.6
Total shrinkage Radial (Saturated to 0%MC) (%)
2.9
Drying Defects
Ease of Drying: It is reported to be easy to dry. Drying Defects: Slight risk of warping and checking is reported.
Recommended Dry Kiln Schedule
UK-C
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
584
Stiffness (MOE) 12%MC (kgf/cm²)
105000
Compression parallel to fiber 12%MC (kgf/cm²)
241
Compression perpendicular to fiber 12%MC (kgf/cm²)
48
Shear strength radial 12%MC (kgf/cm²)
56
Janka hardness (side) 12%MC (kgf)
282
Workability
Finishing
It has a very smooth finishing.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, fittings
General Housing
- 10 - Silica in Timbers
Fittings
- 19 - Silica in Timbers
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