Timbers of Kerala

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Scientific Name  Lagerstromia microcarpa Wt.
Trade Name  Benteak
Local Name  Venthekku, Vellilavu
Family  Lythraceae
Tree Size  Large
Tree Height ( m )  20 - 30
Tree Diameter ( cm )  110
Tree Distribution  West coast semi-evergreen, moist teak bearing and Southern moist mixed deciduous forest
Sapwood-Heartwood Distinction  Distinct
Sapwood Colour  Grey or pinkish
Heartwood Colour  Reddish brown
Hardness  Moderately hard
Specific Gravity Based on Weight Over-dry and Volume Green  0.5
Weight  Moderately heavy
Weight(Kg)/cubic meter at 12% Moisture Content  617
Texture  Coarse textured
Grain  Straight to somewhat interlocked grain
Growth Rings  Distinct
Porosity  Porous to semi- ring porous
Vessel Size  Large in earlywood, medium to small in latewood
Vessel Arrangement  Solitary or in radial multiples of three to four,rarely in clusters of four to six
Vessel Diameter   230 - 380 310
Vessel Element Lenght  240 - 1010 1010
Perforation  Simple
Pit Outline  Polygonal
Pit Size  Large(9-18 Ám),vestured
Vessel Ray Pitting  Larger, ovel or elliptical with much reduced border
Ray Nature  Fine,numerous and closely spaced
Ray Arrangement/Type  Uniseriate,homogeneous,wholly made up of procumbent cells
Ray Number  3 - 6
Ray Height  470 - 1640 850
Fibre Walls  Thin to thick walled,septate with simple pits on radial walls.Chambered crystals present in fibers
Fiber Length 
Modulus of Rupture in kg/cm2 (Green)  682
Modulus of Elasticity in kg/cm2 (Green)  110500
Modulus of Rupture kg/cm2 (Dry)  986
Modulus of Elasticity in kg/cm2 (Dry)  126500
Uses  Doors and window frames, tea chests, railway sleepers, textile mills, bentwood articles, hurdles for sports, fence posts, brushware, furniture and cabinets, blackboards and tool handle, lorry and bus bodies, carving and turnery, agricultural implements, fuel wood, match splints & boxes, cooperage, boats & shipbuilding, bridges, constructional purposes, spokes, felloes and shafts
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  • TS (100X)
  • TLS(100X)
  • RLS(100X)

College of Forestry - KAU