Odd pinnate compound leaf length 15-30 cm; Stipules fall off early; Leaflets 3-5 pairs, oval, 6- 1 1 cm long and 4-5 cm wide, tapering at the top, rounded at the base, hairless on both sides, and slender veins.
The bark is gray-green, the trunk is curved, and the material is very small, so it is difficult to obtain long trees with large diameter. The sapwood is narrow, dense and hard, and sinks when entering the water. The heartwood is bright red or orange, and becomes purple-brown stripes after long-term exposure to the air. The texture is exquisite and floating, with endless changes and overflowing fragrance. At the same time, it is also a precious medicinal material. Chairs and sofas made of it have therapeutic effects, and are considered to be the most valuable wood in China since ancient times.
Panicle terminal or axillary, flowery, brown pubescent; The pedicel is 7- 10 mm long, and there are two linear and easy-to-fall bracteoles at the top. Calyx bell-shaped, slightly curved, about 5 mm long, calyx teeth wide triangle, about 65438 0 mm long, round at the top, covered with brown silky hair; Corolla yellow, petal stalk long, edge wavy, flag petal width 10- 13 mm; Stamens 10, single, finally divided into 5+5 diploids; Ovary shortly stipitate, densely pilose.
Pods are round, oblique and flat, with wide wings, which can reach 2 cm. Seed 1 ~ 2. Raw sloping land for sparse forest or cultivation.
Species classification of rosewood:
Rosewood:
Ye Tan has rough texture, purple-brown color, wide brown stripes, thick and straight vascular stripes, and obvious brown eyes of vascular stripes after polishing; Big-leaf rosewood is the common name of ebony Lushi ebony, which is ebony, not rosewood.
Rosewood rosewood:
Pear rosewood has brown eyes as thick as an old pear, slightly twisted, light in color, easy to fade, thicker in texture than other rosewood, not suitable for fine carving, not as expensive as Venus rosewood and chicken blood rosewood, and the production year is later, mostly after the late Qing Dynasty.
Niumao rosewood:
The brown eyes of red sandalwood with cow hair pattern are very thin and long, slightly curved, like cow hair, which is second only to Venus red sandalwood in terms of luxury and is also used more in furniture. The wood grain is not obvious, the color is orange at first, and it is as deep purple as paint after a long time. There are almost no rings, and the veins are extremely thin and twisted like cow hair.
Chicken blood rosewood:
Although chicken blood rosewood has no patterns of "Venus", "stranded" and "satin", its color is deep purple with red, full and dense. The texture is delicate and oily, especially near the sapwood, and there are often irregular dark scarlet zebra patterns of different lengths, which is quite interesting. Chicken blood rosewood is not common, and the quantity is not too much. Not as famous as Venus rosewood. Its material diameter is slightly larger, mostly large materials such as face center.
Venus rosewood:
Venus rosewood is a kind of rare rosewood. "Venus" means that after this piece of rosewood is broken, every brown hole will flash with polished gold spots of Venus. In fact, the so-called bright spot is the colloidal crystal between the vessel fibers of trees, which is also found in other Woods, but this kind of wood is precious, mythical and over-praised. The brown eyes of Venus rosewood are twisted or "S"-shaped. Seen from one side, it presents an undulating "watercress" pattern, which is as colorful as satin flash under the sunlight. Its texture is fine and smooth, and its color is purple and black. It was made into a vessel, which made it ancient. After "patina", its color is dark gray and simple, especially suitable for fine carving. Because its horizontal and vertical texture is not obvious, the horizontal silk can "separate branches" and "cross bridges", so it is deeply loved by people. In addition, its heavy weight and deep color are also very suitable for the support of jade antiques, so it is widely used by the court. Because it is thin and firm, it can also be made into castanets and other musical instruments, which are crisp and firm, unlike jade, which cannot be replaced by other wood. In addition, its sawdust powder can be used as medicine to treat terminal phlegm disease, which is a valuable medicinal material.