Growth Habits of White Birch Wood

- Nov 05, 2019-

Growth Habits of White Birch Wood


White birch, the tree species of the deciduous trees in the birch family, the white tree body, straight and straight; thin leaves, the color varies with the seasons. Hi light, not resistant to shade and cold.


Birch, also known as birch, birch, and birch, is mainly produced in the Northeast, Xiaoxing'anling, Changbai Mountain and North China high mountains; the vertical distribution is below 1000m in the northeast and 1300-2700m in the north. The Soviet Union (Russia) Siberia East, North Korea and northern Japan are also distributed.



Birch trees, namely white birch. It is a deciduous tree of birch family, with a breast diameter of 50cm; the crown is oval in shape and can be up to 27 meters in height; the bark is grayish white, layered and peeled off in a paper-like layer, and the hole in the yellow bark of the lenticule is a linear shaped hole, which looks like a trunk. There are countless eyes on the top, looking around. Branches dark gray or dark brown, glabrous, with sparse or dense resin glands or absent; twigs dark gray or brown outside by white waxy layer, glabrous and without resin glands, sometimes sparse hairs and sparse resin glands body. Leaf thick paper, triangular-ovate, triangular-shaped, triangular, rarely rhomboid-ovate and broadly ovate, 3–9 cm long, 2-7.5 cm wide, apically acute, acuminate to caudate The base is truncate, broadly wedge-shaped or wedge-shaped, sometimes slightly heart-shaped or nearly circular, the edges are heavily serrated, sometimes with nicked heavy serrations or single teeth, sparsely hairy and glandular at the time of maturity, hairless after maturity Glandular point, glabrous below, dense glandular point, lateral veins 5-7(-8) pairs; petiole thin, 1-2.5 cm long, glabrous. Fruits solitary, cylindrical or oblong-cylinose, usually ca. 2-5 cm, ca. 6-14 mm. sessately sessate, 1-2.5 cm long, densely pubescent, subulate. Resin glands with or without sparse or dense; fruit stalks 5-7 mm long, densely pubescent to pubescent when pubescent, pubescent pubescent, margin pubescent, base cuneate or broadly culate Oval, apex acuminate or obtuse, lateral lobes ovate or suborbicular, sately sately sately sately sately sately sately sately sately sessately sessately sessately sessate When bent, the length and width are larger than the middle split. Nutlets narrowly rounded, oblong or ovate, 1.5--3 mm long, 1-1.5 mm wide, pubescent on the back, membranous-winged 1/3 longer than fruit, less equal. , with fruit width or slightly wider than fruit. Flowering period from May to June; fruit ripening from August to October. Flowers are unisexual, monoecious, and inflorescences.