Juglans australis
Specifications
Family
Juglandaceae
Species
Juglans australis Griseb.
Argentine walnut
Description
The sapwood is whitish, clearly distinguishable from the heartwood, which is more or less dark brown, sometimes with purplish hues. The texture is coarse, the grain straight, and the density varies widely between 0.35 and 0.75.
Plant morphology
A tree that can reach 20-25 m in height, it has a sturdy trunk with light-colored bark, fissured longitudinally. The crown is broad, and the leaves are alternate, compound, and large, ovate. It produces edible nuts.
Natural occurrence
Countries of origin and distribution
Western South America: Northern Argentina, Peru, Bolivia.
Habitat and ecology
It is a species typical of the Yungas, the high-altitude humid forest of the Argentine Andes, and is more frost-resistant than the native walnut. It produces juglone, an allelopathic substance that inhibits the growth of other nearby species.
Uses
Use class
CU1
CU2
CU3
CU4
CU5
Application areas
It resists alterations well and is sought after for furniture, interior design, and fine carpentry.
Technical data
Aesthetic characteristics
Grain
Obvious
Texture
Medium
Physical and mechanical properties
Density
ρ
ρ
610
kg/m3
Radial shrinkage
Rad. sh.
Rad. sh.
27
MPa
Tangential shrinkage
Tang. sh.
Tang. sh.
52
MPa
Bending strength
M.O.R.
M.O.R.
57
MPa
Modulus of Elasticity
M.O.E.
M.O.E.
8720
MPa
Durability characteristics
Fungal resistance
Moderatamente durabile
Insect resistance
Resistant