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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.

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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.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section

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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