Origin to Madagascar, species Latin name: Dalbergia louuelii R.Viguier, trade name: Bois de rose, diffuse porous wood. Growth ring is not obvious. Orange-red heartwood new section, then turn deep purple or black purple long; obvious scratches. A few holes in the naked eye can not see; main single pore; scattered; maximum tangential diameter 206μm, the average 149μm; small number of at least 1-4 mm2. Axial parenchyma obviously under a magnifying glass, the main type of concentric layers of thin (width 1-2 cells), and the regular arrangement. The fiber wall thickness. Wood rays visible under a magnifying glass; ripples obvious; rays form a separate organization with. Weak acid aroma; very fine to fine structure; texture staggered; there are local curling; very heavy weight, air-dry density 0.95g / cm3. According to the Madagascar Institute of Forestry reported that its wood physical and mechanical properties of the data as follows: test material origin, Madagascar; air-dry density test material 0.95g / cm3; all dry shrinkage rate: radial 3.7%, 6.7% tangential, volume 10.5%; flexural strength 215.7Mpa; compressive strength parallel to grain 77.5 Mpa; hardness 12.5N.