Although you are unknown.
Growing in the cracks of ordinary stones.
A merciless storm.
Turn you into pieces of green.
Dotted on the gray stone mountain.
The temperament of coming back from the dead.
Show your indomitable spirit.
Stubborn personality.
Created your tenacious mind.
You are a thriving life in the Rocky Mountains!
The introduction of birch is as follows:
Birch is a deciduous tree, with a height of 25 meters and a DBH of 50 cm, and an oval crown. The bark is white, peeling like paper, and the lenticels are yellow. Branchlets are thin, reddish brown, glabrous and covered with ash.
The leaves of Betula platyphylla are triangular or rhomboid, with irregular double serrations on the green side and sparse oil glands on the back.
Betula platyphylla is solitary, pendulous and cylindrical. Nuts are small and flat with wide wings on both sides.
Birch flowers are unisexual and all form catkins. Infructescence is cylindrical, pendulous, with smaller wings and wider nuts. The membranous wing of nutlet is longer than the fruit 1/3, shorter than the fruit, and as wide as or slightly wider than the fruit. The flowering period is from May to June, and the fruit ripens to 10 in August.
Betula platyphylla likes sunshine, cold tolerance, strong adaptability to soil, and likes acidic and humid soil. It can grow in swamps, dry sunny slopes and wet shady slopes, and is a pioneer tree species in secondary forests. Birch trees are produced in northeast China, north China, Henan, Shaanxi, Ningxia, Gansu, Qinghai, Sichuan, Yunnan and southeast Tibet. Besides China, it is also distributed in Russian Far East, East Siberia, East Mongolia, Korea and Japan.