The State Bureau of Quality and Technical Supervision issued the standard of "Mahogany" on May 19, 2000, and put forward 33 species which can be called Mahogany, belonging to 8 categories, namely, rosewood, rosewood, ebony, striped ebony and Pterocarya stenoptera, and belonging to 5 genera, namely, Pterocarya stenoptera, Dalbergia odorifera, persimmon, asparagus and Sabina vulgaris.

Among them, Pterocarya stenoptera and Dalbergia odorifera are the main species, and most of them are imported from Southeast Asia, tropical Africa and Latin America. The identification and differentiation of redwood are mainly based on simple and practical macro characteristics (such as density, structure, wood color and texture), supplemented by necessary wood anatomical characteristics to determine its genus and species.

Extended data

Identification method of Huanghua pear

Color: Many books and monographs describe the color of Huang Huali as "from light yellow to purplish red", which is extremely irresponsible. When you open the chromatogram, you will find that this statement covers almost most chromatograms and cannot be distinguished from other hardwood colors.

Secondly, as for the striped melanin band of Huanghua pear wood, there is no real black or dark brown striped melanin band, because this color texture is quite different from the light tone of wood, and the patterns formed are often noisy and impetuous, which obviously does not conform to the aesthetic concept of Ming literati.

Bristle eye: Many books and writings summarize the bristle eye characteristics of Huanghua pear as "wheat ear pattern, crab claw pattern and cow hair pattern". By investigating the collections and authoritative works of major museums abroad, it is found that these bristle-eye features are not unique to Huanghua pear. For example, some grass pears also have obvious "grain of wheat ears", chicken wing wood has typical "crab claw grain", and purple pears and light-colored rosewood often have "cow hair grain". These texture features are extremely confusing for enthusiasts who are new to the collection circle, and they also pay a lot of tuition fees for it.

Reference: Baidu Encyclopedia-Redwood Baidu Encyclopedia-Redwood Phoenix Net-Redwood