Select Language:  

VERNONIA (Vernonia arborea)

Trade Name

Vernonia

Scientific Name

Vernonia arborea Buch.-Ham.

Family

ASTERACEAE

Common Names

Tapong-tapong (Malaysia); Menggambong (Malaysia); Chuang (Thailand); Kaphuam maphrao (Thailand); Sembang kuwuk (Indonesia); Malasambong gubat (Philippines); Tapong-tapong (Sabah); Gambong (Malaysia); Nangi (Indonesia); Nuan paeng (Thailand); Tree vernonia

Scientific Name Synonyms

Vernonia wallichii Ridley; Vernonia vaniotii H. Lév.; Vernonia javanica DC.; Vernonia celenonia DC.

Description Of The Tree

Botanical Description

It is an evergreen small or medium-sized tree, up to 30 m high and 60 cm in diameter. The bole is straight.

Natural Habitat

Vernonia arborea is common in secondary forests. It is found from lowland to lower montane habitats, up to 2,200 m of altitude.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally tyloses common. Vessels per mm2 5 to 20. Occasionally vessels per mm2 less than 6. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 micras or less. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Occasionally two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays less than 4 per mm (rare). Rays of two distinct sizes. Sheath cells. All ray cells upright and/or square. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells pro Occasionally septate fibers present. Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is pale brown to pale gray, not clearly differentiated from the sapwood.

COLOR INDEX (1=Black, 7=Light yellow,white)

7

Grain

The grain is straight or slightly interlocked.

Texture

The wood is mostly coarse in texture.

Natural Durability

The wood is non-durable and very susceptible to dry-wood termites and fungi.

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

5

Wood Physical Properties

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

0.33

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

0.35

Wood Chemical Properties

Wood Mechanical Properties

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

377

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

234

Workability

Machining

It is easy to machine.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, panelling, TOOLS, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shoes, matches

General Housing
  • 10 - Silica in Timbers
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Shoes
  • 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
Matches
  • 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement

Please Provide Information To View Producer Information

* Or, continue as guest