Timbers of Kerala

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Scientific Name  Morinda tinctoria Roxb.exDC.
Trade Name  Manjanathi
Local Name  Manjanathi,Manja-pavatta
Family  Rubiaceae
Tree Size  Small to medium
Tree Height ( m )  7 - 12
Tree Diameter ( cm )  30
Tree Distribution  Southern dry mixed deciduous forests in Central Kerala
Sapwood-Heartwood Distinction  Not distinct
Sapwood Colour  Light red with Yellowish streaks
Heartwood Colour  Sapwood and heartwood not distinct
Hardness  Moderately hard
Specific Gravity Based on Weight Over-dry and Volume Green  0.77
Weight  Light
Weight(Kg)/cubic meter at 12% Moisture Content  545
Texture  Medium coarse textured
Grain  Straight grained
Growth Rings  Indistinct
Porosity  Diffuse porous
Vessel Size  Small to medium sized
Vessel Arrangement  Solitary and in radial multiples of two to ten
Vessel Diameter   160 - 270 200
Vessel Element Lenght  295 - 660 660
Perforation  Simple
Pit Outline  Oval or elliptical
Pit Size  Medium (6-9 Ám),non-vestured
Vessel Ray Pitting  Alternate,oval or elliptical and occurs throughout the ray cells
Ray Nature  Fine to moderately broad,numerous and closely spaced
Ray Arrangement/Type  1-12 cells wide, heterogeneous type-ll .Body of ray made up of procumbent cells with four or more marginal rows of square or upright cells
Ray Number  10 - 15
Ray Height  620 - 1300 930
Fibre Walls  Thin to thick walled,non-septate with minute bordered pits on radial walls
Fiber Length 
Modulus of Rupture in kg/cm2 (Green) 
Modulus of Elasticity in kg/cm2 (Green) 
Modulus of Rupture kg/cm2 (Dry) 
Modulus of Elasticity in kg/cm2 (Dry) 
Uses  Turnery and carvings, penholders, furniture, toys and combs
  • Tree Image
  • Timber Gross View
  • TS (100X)
  • TLS(100X)
  • RLS(100X)

College of Forestry - KAU