How to write the word "pine" for pine trees?

Pine tree, the branches are wheel-shaped, the internodes are long, the branchlets are thin and flat or slightly bent downward, and the needles are slender and bundled. So its crown looks loose but not compact, and the word "loose" is an image description of its crown characteristics. So "pine" is a tree with a loose crown.

Pinus armandii, also known as Pinus armandii and Pinus pentaphylla, can be planted in Qinba Mountain area and some mountainous hills in Weibei. The annual average temperature should be lower than 15℃, and the annual precipitation should be 600-1500mm. It has strong adaptability to soil and can grow on mountain cinnamon soil, red yellow soil and red lime soil. However, it is strict with soil moisture, and it is not drought-tolerant and barren, even worse. It can grow normally at the low temperature of -7- 10℃, and can also grow at the absolute low temperature as high as -3 1℃. Huashan pine tree is tall, with green needles and many cones. It is also a kind of dried fruit tree with rich nutrition and delicious taste.