Hedgehog rosewood: According to the new national standard (mahogany GB/T18107-2017), among the 29 main varieties, they are mainly produced in tropical Africa: Gambia, Guinea-Bissau, Mali, Nigeria and other countries.

2018165438+1October 14, the red list of IUCN endangered species was updated and released. Included in the IUCN Red List of Endangered Species: Endangered.

Extended data:

morphological character

The skin is grayish brown, about 3mm thick, fragile, small pieces fall off, and it is crushed by hand due to aging. Slits and shallow grooves are longitudinally cracked, 5mm deep and 5 mm wide, and some are transversely cracked. The endothelium is purple-brown, surrounded by layers, and the stone cells are rich, flat and basically arranged in a circle.

The thickness of the skin at the height of the chest is 1 ~ 1.5 cm, which is fibrous and peels off in large strips when wet, and the skin automatically leaves the surface of the material after drying. The leather bottom is smooth, the dry leather bottom is brown, with more blue spots turning black and less phloem, which often remains on the wood surface.

The trend of porous materials and semi-circular porous materials is obvious. The growth rings are slightly obvious or obvious. Heartwood is purplish red brown or reddish brown, often with dark stripes; The scratches are clearly visible. The tube hole is inside the growth ring and can be seen by naked eyes; The largest diameter of chordae tendineae is 290 microns, with an average of 65438 0.77 anal meters. ..

The number is very small to slightly less, 2 ~ 7 pieces /mm2. The axial parenchyma is rich, which is obvious or visible under a magnifying glass, mainly in the form of bands and thin lines (mostly 2 ~ 4 cells wide).

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