| Scientific Name | Zanthoxylum rhetsa (Roxb.) DC. |
| Trade Name | Mullilam |
| Local Name | Mullilam, Kothumurikku |
| Family | Rutaceae |
| Tree Size | Medium to large |
| Tree Height ( m ) | 15 - 22 |
| Tree Diameter ( cm ) | 40 - 50 |
| Tree Distribution | Moist teak bearing forest and Southern moist mixed deciduous forests. Occasionally in West coast semi- evergreen forests. |
| Sapwood-Heartwood Distinction | Not distinct |
| Sapwood Colour | Yellowish grey |
| Heartwood Colour | Sapwood and heartwood distinct |
| Hardness | Moderately hard |
| Specific Gravity Based on Weight Over-dry and Volume Green | |
| Weight | Moderately heavy |
| Weight(Kg)/cubic meter at 12% Moisture Content | 725 |
| Texture | Fine to medium coarse textured |
| Grain | Straight to somewhat wavy grain |
| Growth Rings | Distinct |
| Porosity | Diffuse porous |
| Vessel Size | Vessels solitary and in radial multiples of two to four,small |
| Vessel Arrangement | Solitary and radial multiples of two to four, rarely in clusters of four. Individual vessel outline circular |
| Vessel Diameter | 100 - 180 160 |
| Vessel Element Lenght | 260 - 790 790 |
| Perforation | Simple |
| Pit Outline | Circular |
| Pit Size | Small(3-5 µm), vestured |
| Vessel Ray Pitting | Alternate and pit outline circular and occurs throughtout the ray cell |
| Ray Nature | Fine, numerous and closely spaced |
| Ray Arrangement/Type | One to three seriate, homogeneous, wholly made up of procumbent cells |
| Ray Number | 3 - 7 |
| Ray Height | 560 - 1550 980 |
| Fibre Walls | Thin to thick walled,septate with minute borderd pits on radial walls |
| Fiber Length | |
| Modulus of Rupture in kg/cm2 (Green) | 775.6 |
| Modulus of Elasticity in kg/cm2 (Green) | 130200 |
| Modulus of Rupture kg/cm2 (Dry) | 1296 |
| Modulus of Elasticity in kg/cm2 (Dry) | 154200 |
| Uses | General-purpose plywood, furniture and cabinets, tool handles, aircraft plywood, marine plywood, blockboard, fence posts and turnery shuttles in textile mills. |
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