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LANETE (Wrightia arborea)

Trade Name

Lanete

Scientific Name

Wrightia arborea (Dennst.) Mabb.

Family

APOCYNACEAE

Common Names

Thng mc lng (Vietnam); Mc lng (Vietnam); Mok man (Thailand); Taung salat (Myanmar); Letthoke (Myanmar)

Scientific Name Synonyms

Wrightia tomentosa (Roxb.) Roem. & Schult.; Periploca arborea Dennst.; Nerium tomentosum Roxb.

Description Of The Tree

Botanical Description

It is a small to medium-sized tree up to 20 m tall. The bole is up to 35 cm in diameter.

Natural Habitat

This species is fairly common in deciduous forests and thickets, often along streams, up to 1,650 m of altitude.

Non Timber Uses

W. arborea contains an indigo yielding glucoside in the seeds, roots and leaves.

Wood Identification

Anatomic Description Of Wood

Tangential diameter of vessel lumina 100 micras or less (very small). Vestured pits. Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 micras or les Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Fibers with simple to minutely bordered pits.

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is creamy white to pale yellow, sometimes with a pinkish tinge.

Grain

This timber usually has straight to slightly interlocked grain.

Texture

The wood is mostly fine in texture.

Luster

This wood is frequently lustrous.

Natural Durability

It has a low to very low resistance against biological degrade.

Natural durability index (1= Very high durability, 7=Vey low durability)

5

Resistance To Impregnation

Treatments either with oil or salt based preservatives give unsatisfactory results.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.56

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.62

Drying Defects

Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of checks. Kiln Schedules: The kiln schedule has been tested.

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

915

Stiffness (MOE) 12%MC (kgf/cm²)

67000

Compression parallel to fiber 12%MC (kgf/cm²)

357

Compression perpendicular to fiber 12%MC (kgf/cm²)

82

Shear strength radial 12%MC (kgf/cm²)

178

Workability

Sawing

Cutting resistance is generally low.

Machining

Machining of this species is reported to be easy.

Turning

30

Response To Hand Tools

This species is reported to be easy to work with hand tools.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, TURNING, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, pencil, shoes

General Housing
  • 10 - Silica in Timbers
Turning
  • 30 - Embassy of Honduras in Japan
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Pencils
  • 67 - Maderas latinoamericanas. VIII, Calophyllum brasilense, Couratari panamensis, Dendropanax arboreum y Bombacopsis sessilis
Shoes
  • 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise

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