Timbers of Kerala

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Scientific Name  Bombax ceiba
Trade Name  semul
Local Name  mullilavu
Family  Bombaceae
Tree Size  large to very large
Tree Height ( m )  25 -
Tree Diameter ( cm )  150 -
Tree Distribution  west coast semi-evergreen, southern moist mixed deciduous and moist teak bearing forests
Sapwood-Heartwood Distinction  not distinct
Sapwood Colour  creamy white to pale yellowish-brown or greyish brown
Heartwood Colour  creamy white to pale yellowish-brown or greyish brown
Hardness  very soft to soft
Specific Gravity Based on Weight Over-dry and Volume Green 
Weight  very light to light
Weight(Kg)/cubic meter at 12% Moisture Content  365 -
Texture  coarse
Grain  Straight
Growth Rings  scarcely distinct
Porosity  Diffuse porous
Vessel Size  very large to large
Vessel Arrangement  scanty, mostly solitary or in radial multiples of 2 or 3
Vessel Diameter   -
Vessel Element Lenght  -
Pit Outline 
Pit Size 
Vessel Ray Pitting 
Ray Nature  fine to very broad, widely spaced
Ray Arrangement/Type 
Ray Number  -
Ray Height  -
Fibre Walls 
Fiber Length 
Modulus of Rupture in kg/cm2 (Green)  382
Modulus of Elasticity in kg/cm2 (Green)  51043
Modulus of Rupture kg/cm2 (Dry)  428
Modulus of Elasticity in kg/cm2 (Dry)  59500
Uses  class III plywood and veneers; packing cases and boxes; match splints and box shipbuilding; fishing floats; pencil slats

College of Forestry - KAU