Pine, Pinus tabulaeformis leaves, Pinus massoniana, Pinus taiwanensis, Pinus bungeana leaves, Pinus koraiensis leaves, Pinus armandii leaves, Pinus parviflora leaves.

Cypress, cypress, golden cypress, Platycladus orientalis, Sabina vulgaris, etc.

2. Different shape features

Loose branches are spinning. The winter buds are obvious and the bud scales are numerous. There are two kinds of leaves, one is primary leaves, brown and scaly, which grow on long branches and degenerate into bracts except at seedling stage; The other is the secondary leaf, which is needle-like, that is, the commonly seen needles, usually 2, 3 or 5 needles are 1 bundle, and it is born at the top of the extremely underdeveloped short branch in the axillary part of the bract. The base of each bundle of needles is surrounded by a leaf sheath composed of 8- 12 bud scales, and the leaf sheath persists or falls off early. The cross section of the needle is semicircular or triangular, with 65438+.

Cypress, opposite leaves or 3-4 whorls, sparsely inserted spirally, scaly or spiny, or the same tree has two types of leaves. Cones are unisexual, monoecious or dioecious, solitary branches or leaf axils; Male cones have 3-8 pairs of cross-opposite stamens, each stamen has 2-6 anthers, and the pollen has no air sac; The female flower has 3- 16 opposite or 3-4 whorled scales, all or part of the scales have 1 to most of the upright ovules at the ventral base, the thin ovules are specific between the two scales, and the bracts and scales are completely combined.

3. Different uses

Pine trees and pine trees not only have economic uses, but also have important ornamental value because of their majestic posture and long life. It is an important part of many scenic spots in China.

Cedar, with moderate hardness, fineness, fragrant smell and strong corrosion resistance, is mostly used in construction, furniture, joinery and so on. Oil is extracted from seeds and used to make soap, food or medicine.

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