Mahogany GB / T 18107-2017 ? Appendix E → Aromatic wood species and their wood characteristics
Appendix E (informative)
Aromatic wood species and their wood characteristics
Dalbergia odorifera T.C. Chen (Leguminosae Dalbergia)
Foreign trade name ：Scented rosewood
Trees and distribution : arbor, up to 15 m in height and 0.8 m in DBH. The bark is gray or grayish white, with shallow longitudinal fissure. Hainan, China.
Macroscopic structural features ： Porous wood to Semi ring hole material 。 Sapwood Grayish yellow brown or light yellowish brown, obviously different from heartwood. Heartwood Reddish brown or yellowish brown, often with black stripes. Growth ring Obviously. Tube hole Visible to the naked eye, the number is small to a little less. Axial parenchyma Visible to the naked eye, it is mainly banded and poly winged. Wood ray It's obvious under a magnifying glass. wave so The new section has a strong spicy aroma, but it is slightly fragrant after a long time; The texture is fine and the texture is oblique or interlaced (Fig. E.1).
Figure E.1 photos of wood macrostructure
Microstructure characteristics ： catheter The main hole is single tube hole, a few diameter cracks and multiple pipe holes (mostly 2 ~ 3), scattered; 2 / mm ²~ 12 / mm ²； Maximum chord diameter 208 µ m. Average 114 µ m. The pits between the tubes are arranged with each other and are attached to the pits; The pit type between the tube and the ray is similar to that between the tube and the ray. Axial parenchyma Most of them were 1-4 cells wide; Crystalloid cells were common in the cells; Overlapping. Wood fiber The wall is thick and overlapped. Wood ray 7 pieces / mm ~ 13 pieces / mm; Overlapping. There were few uniserial rays, 1-7 cells higher. The width of multi row rays was 2-3 cells and the height was 3-14 cells. The X-ray tissue is of the same shape as single column and multi column (Fig. E.2).
Figure E.2 photos of wood microstructure
Air dry density (12% water content) ：0.82 g/cm ³~ 0.94 g/cm ³。
Specimen material : cafw13012 (Hainan, China), cafw14622 (Hainan, China), cafw19152 (Hainan, China), cafw14757 (Guangdong, China), cafw15990 (Guangdong, China), cafw16765 (Guangdong, China), cafw17860 (Guangdong, China), cafw17862 (Guangdong, China).