Timbers of Kerala

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Scientific Name  Toona ciliata Roem
Trade Name  Toon
Local Name  Mathagirivembu, Chandanavembu
Family  Meliaceae
Tree Size  Large
Tree Height ( m )  20 - 30
Tree Diameter ( cm )  60 - 90
Tree Distribution  West coast tropical evergreen, Southern hilltop tropical evergreen, West cost semi-evergreen and occasionally in Moist teak bearing forest.
Sapwood-Heartwood Distinction  Distinct
Sapwood Colour  Pale pinkish grey to pinkish brown
Heartwood Colour  Reddish brown or brick red
Hardness  Moderately hard
Specific Gravity Based on Weight Over-dry and Volume Green  0.82
Weight  Light to moderately heavy
Weight(Kg)/cubic meter at 12% Moisture Content  515
Texture  Coarse textured
Grain  Straight grain
Growth Rings  Distinct
Porosity  A semi ring porous to ring porous wood
Vessel Size  Vessels solitary and in radial multiples of two to three. Earlywood vessels large forming tangential
Vessel Arrangement  Solitary and in radial multiples of two to three, occasionally in clusters of three to four. Vessel outline circular
Vessel Diameter   190 - 280 240
Vessel Element Lenght  170 - 590 590
Perforation  Simple
Pit Outline  Polygonal
Pit Size  Medium- sized(6-10 Ám),vestured
Vessel Ray Pitting  Simple and pit outline polygonal, occurs all over the cell. Reddish gummy deposits present inside the vessels
Ray Nature  Moderately broad to fine widely spaced
Ray Arrangement/Type  One to five seriate, heterogeneous typell. Uniseriate rays made wholly of square cells; multiseriate rays made up of procumbent cells with two to four marginal raws of square cells.
Ray Number  4 - 8
Ray Height  355 - 660 470
Fibre Walls  Thin to thick walled, non-septate, inter- fibre pits minute, confined to the radial walls.
Fiber Length 
Modulus of Rupture in kg/cm2 (Green)  436
Modulus of Elasticity in kg/cm2 (Green)  63980
Modulus of Rupture kg/cm2 (Dry)  562
Modulus of Elasticity in kg/cm2 (Dry)  78530
Uses  Furniture and cabinets general purpose plywood, blockboard, cigar box, packing case, textile mill accessories, sports good and musical instruments.
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College of Forestry - KAU