The difference between iron birch and pestle elm and the identification method

Like a piece of rue wood.

Iron birch. This precious tree is about 20 meters high, with a trunk diameter of about 70 centimeters, and a lifespan of about 300-350 years. The bark is dark red or almost black with white spots on top.

The leaves are oval in shape. It is not widely produced, mainly in the southern part of Korea and the border areas between Korea and China, and there are some along the southern coast of the Soviet Union.

The wood of the iron birch is hard, three times harder than oak and twice as hard as ordinary steel, making it the hardest wood in the world, and people use it as a substitute for metal. The Soviet Union used to use iron birch to make rolling balls and bearings, which were used in speedboats. The iron birch tree also has some wonderful properties, because it is extremely dense in texture, so it sinks as soon as it is placed in the water; Even if you soak it in water for a long time, the inside of it will remain dry.

Iron birch is propagated by seeds and is a birch family, a birch plant. Deciduous tree, flowers unisexual, monoecious, inflorescences, nuts, flanked by membranous wings. Seeds are spread by the wind. Light-loving, cold-tolerant, drought-tolerant people are so barren.

Pestle elm has been a precious wood since ancient times, so there is"South sandalwood and north pestle"called. It's a pity that many modern people don't know it, and many of them are regarded as well"Firewood"Sold cheaply.

Elm, not elm, is very different. Elm is ubiquitous in the north and south, and the pestle elm is a hardwood that is very rare in northern China, and its value is equal to that of red sandalwood, but it is not as famous as red sandalwood. This kind of tree is now basically extinct in Kitano.

The elm is an iron birch. Pestle elm (scientific name Jianhua) in the world's collapsed state bureau has timber, there is no wood trace rental material scientific name Pestle elm, pestle elm is only a wood of Jianhua and color wood (common name). Just like mahogany, there is no wood in the world with the scientific name of mahogany, mahogany is just a common name.

1. The local name is "Red Lady", and since the Ming Dynasty, there is a "South Rosewood, North Pestle Elm" beauty group reputation, and the South Rosewood has the same magic. Small trees with black-gray bark that grow on stone particles or on the back slopes of high mountains. The material is hard and dense, suitable for joinery.

It is an excellent tree species in the north, a precious and rare tree species, which can only grow on the top of high mountains, and the number is not much, which is very precious.

2. The elm wood grows in the depths of the forest of Changbai Mountain, absorbing the aura of Tianchi of Changbai Mountain, and has the heaviness of the black water of Baishan Mountain, so the wood is tough and delicate, the heart of the tree is natural wood red, and the literature and science are exquisite, and the south sandalwood is suitable for carving all kinds of exquisite wood or wood ornaments. The disadvantages are that it is easy to crack, the sapwood is easy to moth, it is not resistant to rot, and the production area of elm is not wide.

The leaves of elm are single-alternate, the leaves are ovate-elliptic or ovate-lanceolate, and the edges of the leaves are multi-serrate.

The leaves of Sassafras are alternate. Clustered at the apex of the branches, ovate or obovate, 9 to 18 cm long, 6 to 10 cm wide, the apex of the leaf gradually sharpened, the base wedge-shaped, the leaf entirety or or shallowly lobed, the apex of the lobes slightly obtuse, the leaves papery, green above, grayish-green below.

Elm flowers are bisexual, purple-brown flowers with clusters of umbrella inflorescences, and flowers bloom first or simultaneously in early spring.

The inflorescence of Sassafras is apical, 4 to 5 cm long, with several small flowers, the flowers are yellow, about 4 mm long, and the flowers have 6 petals, lanceolate, about mm long.

No, there are no pestle elms in the five genera, eight categories and thirty-three species of mahogany. Thank you.

Not counting. You can go to the Yanzhao Redwood Forum more to learn.