Among the redwood species, the number is the most Dalbergia species, followed by the rosewood species. Both the genus Pteroma and the Dalbergia belong to the genus of the genus Diptera, and the two genus are difficult to distinguish because the two are mostly loose-pored materials, and the weight and material color are similar. The inter-catheter pores are mutually beneficial and attached. The pits and ray tissues are also the same shape.
After careful study and comparison, the two are still different. The red sandalwood wood is light and soft, the basic density is 0.47-0.58 grams per cubic centimeter, and the air dry density of 6 kinds of rosewood is 0.80-0.92 grams per cubic centimeter; the tendency of scattered pores to semi-annular or circular pores is obvious. The color of the material is reddish brown to purple red, which is relatively uniform; the diameter of the chord of the tube hole is small, generally 260-285 microns; the ray tissue is homomorphic, and there is no tendency of the ray tissue, the rays are usually single, and the two rays are generally rare (the sac of the rosewood) Rosewood rays 1, 2 columns); have aroma or weak; wood shavings immersion liquid generally has fluorescence phenomenon. Dalbergia wood is heavier and harder; the basic density is 0.48-0.89 grams per cubic centimeter, and the 13 types of black rosewood and red rosewood have an average dry density of 0.98-1.09 grams per cubic centimeter; usually loose pores, half The ring material is less; the material color is red or black, which is relatively uneven, often with dark stripes; the chord diameter of the tube hole is small, generally 260-285 microns; the ray structure is the same shape, the profile is inclined, and the rays are usually 2 columns. Single row ray is less (red rosewood Dwarf Dalbergia and Central American Dalbergia ray single row, 2 columns visible; black rosewood Lushi black rosewood ray single row, axial thin wall tissue arrangement is more regular, slightly The acid aroma, wood shavings or sawdust water immersion liquid has no fluorescence; the color and structure are similar to those of sandalwood sandalwood rosewood, which is easy to be mistaken for sandalwood rosewood; acid aroma or rich; wood shavings or wood chips The liquid has no fluorescence.
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