Pine leaves effect: dispel wind and dampness, kill insects and stop itching, activate the blood and tranquilize the mind; pine leaves are needle-like, 6-18cm long, about 0.1cm in diameter. 5 needles of Huashan Pine leaves in a bundle, Huangshan Pine, Horsetail Pine and Pine are 2 needles in a bundle, the base of the sheath is about 0.5cm long, the leaf blade is dark green or withered green, the surface is smooth, and there is a fine groove in the center. The texture is brittle. Gas slightly fragrant, taste slightly bitter and astringent.

There are two kinds of leaves, one is primary leaves, brown scale-like, solitary on long branches, except in the seedling stage, degenerated into bracts; the other is secondary leaves, needle-like, i.e., usually seen needles, often 2-needle, 3-needle or 5-needle as a bundle, born in the axil of the bracts of the very undeveloped short branch tip;

Each bundle of needles at the base of the leaf sheaths for the 8-12 buds scales, the sheaths persistent or early fall, the section of the needle leaves is slightly bitter and astringent. or caducous, needles semicircular or triangular in section, with 1 or 2 vascular bundles.

Expanded information:

Pine family is almost all tall trees, the vast majority of forest species and timber species, in the Northeast, North China, Northwest, Southwest, and South China alpine zone comprises a vast area of forests, but also for the renewal of forests, afforestation of the important tree species.

Some species can be extracted fat, refining turpentine and other chemical raw materials, some species of seeds can be eaten or for medicinal purposes, some species can be used for landscaping species.

Pine trees are extremely adaptable to terrestrial environments. They can tolerate a low temperature of -60℃ or a high temperature of 50℃, can grow in bare mineral soil, sandy soil, volcanic ash, calcareous soil, limestone soil and all kinds of soil from ashed soil to red soil, drought-resistant, infertile, and sun-loving, so it is a famous pioneer tree species.

References: