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Shape characteristics and functions of pine trees

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According to the name, shape feature and function.

Wutong tree, also known as French Wutong, is also known as sycamore. Deciduous trees, up to 35 meters high; The branches are spread out and the canopy is broad; The bark is grayish green, with irregular flake peeling. After peeling, it is pink green and smooth. The leaf blade is triangular, 9-15 cm long and 9-17 cm wide, 3-5 palmately divided, with irregular sharp teeth and wavy teeth at the edge, truncated or nearly heart-shaped at the base, stellate hairs at tender, and nearly glabrous later. Globose inflorescence 2 in diameter. 5-3.5 cm, usually 2 in a string, with hanging bells; Flowers ca. 4 mm long; Sepals 4; Petals 4; male flower; The male flower has 4-8 stamens; The female flower has six separate carpels. The flowering period is may, and the fruit ripening period is from September to October
this species has a tall trunk, lush branches and leaves, rapid growth, easy survival and pruning resistance, so it is widely planted as a roadside greening tree species and also a fast-growing tree species; It has strong resistance to toxic gases such as Ryukyu dioxide and chlorine
willow: a small broad-leaved deciduous tree with no trunk and many side branches. It is used for ornamental purposes and has high ornamental value
poplar: a broad-leaved deciduous tree with trunk and few side branches, which can be used for timber and ornamental. Due to its strong vitality, it can also be used for planting shelterbelt
pine: coniferous evergreen tree with trunk and many side branches, which can be used for timber and ornamental. Some varieties have high ornamental value. Other varieties can also extract turpentine

Name: Pine
scientific name: Pinus
family and genus: Pinus
category: Forest conifer
medicinal value
evergreen tree. Most of them are tall trees. It is 20 ~ 50m high and up to 75m high (very few sugar pines in the United States are shrubby, such as P. pumila and P.)
when young, the tree crown is pyramid shaped, and the branches are mostly in wheel shape. After the seedlings are unearthed and the cotyledons are unfolded, the first ones are the primary leaves, which are solitary, spirally arranged, linear lanceolate, and the leaf margin is toothed. After the primary leaves perform the function of leaves for 1 ~ 3 years, needles appear, usually in bundles of 2, 3 and 5, attached to the top of short branches. Each bundle of needles has a leaf sheath at the base, which falls off or persists in the early stage. The position of resin channel in mesophyll tissue is relatively constant in adult plants, which can be divided into three types: exophytic, mesophytic and endophytic. One or two vascular bundles can be seen in the cross section of pine needles. Vascular bundle merging can occur in double vascular bundle pine trees under special circumstances. The ball flower is unisexual and monoecious. Cones are mostly composed of seed scales and lignified after maturity. The exposed thickened part of the seed scale is called the scale shield, and the tumor like process at the apex of the scale shield is called the scale navel. Some tree species have spiny scales and umbilicus, and some have no. When the cone is mature, the seed scales open and the seeds fall off; However, the scales of a few trees remain closed for a long time. Each species has 2 seeds, the upper part of the seed has a long wing, and a few have short wings or no wings.

pine: coniferous evergreen trees have trunk and many side branches for ornamental use. Some varieties have high ornamental value. Others also extract turpentine. Resin secreted by pine trees is called rosin. From the perspective of chemical composition, rosin is mainly formed by dissolving terpenes with solid resin acid. Rosin is processed. Volatile terpenes are called turpentine. Volatile resin acid fusion is called rosin. When rosin just flows out of the resin channel of pine trunk, it is colorless and transparent Its terpene content is up to 36%. When in contact with air, terpene volatilizes quickly. At the same time, resin acid precipitates in crystalline form. Pine resin itself gradually becomes thick and honey like semi fluid. Pine resin is often sent to factories from forest areas. Pine resin often contains various mechanical mixtures, including pine needles, bark, wood chips Insects, dust and other masson pine resin like composition:
rosin
72-75%
turpentine
16-20%
moisture
4-6%
impurities
0.05-0.3%
when the turpentine is still, the resin acid crystals precipitate from the turpentine and sink. The upper layer often presents a layer of yellow liquid, which is composed of liquid terpenes and some substances difficult to crystallize. The content of liquid turpentine in the upper layer is up to 50%, which is mainly oxidized resin acid
turpentine is exposed to the air for a long time, and the turpentine gradually volatilizes Oxidation and partial oxygen transfer to resin acid. The color of rosin turns yellow and dries up. This kind of rosin is usually called gross rosin. During the processing of gross rosin, the output and grade of rosin and turpentine should be reduced. Therefore, the collected rosin should be processed in time to ensure the quality of rosin and turpentine
purpose of rosin. After processing, remove impurities and produce two important industrial raw materials of qualified rosin and turpentine products by distillation

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pine (column pine)
a kind of conifer, which is tall and thin and has poor shade. It belongs to the South American fir group

pines are evergreen trees, and a few are shrubs. The bark is mostly scaly, the leaves are needle shaped, the fruit is spherical, and the seed is called pine nut, which can be eaten. Wood and resin are widely used
morphological features:
large evergreen tree with straight trunk and 30 ~ 36m high. The bark is grayish brown, with longitudinal cracks and flakes peeling off. Winter buds are columnar, reddish brown, stout and resin free. The needles have two needles or three needles in a bundle, 18 ~ 30 cm long, dark green, stomatal lines on both sides of the abdomen and back, and fine serrations on the edge. It blooms from March to April. The fruit is ripe from October to November of the next year, and the cones are long and conical, with 2 ~ 3 aggregate. Seeds ovoid, trigonous
growth habits:
like light and avoid shade. Cold resistance and high temperature resistance. It can endure drought and moisture, and can endure short-term flooding, so it is named. Developed root system and strong wind resistance. It likes deep and fertile neutral to strong acid soil, and there is yellowing phenomenon when planting in alkaline soil
garden use:
slash pine is vigorous and fast-growing, with strong adaptability, good material and high yield of pine resin. China has been successfully introduced and domesticated for decades, so it has a bright future to be applied as an important tree species in gardens and natural scenic spots south of the Yangtze River. It can be used as garden trees, cluster plants and group plants, and should be planted on the bank and pool

pine directory [hidden]

Morphological characteristics
growth habit
ornamental application
oldest pine
medicinal value research results of French medical circles on pine products
folk traditional pine therapy for common diseases
morphological characteristics of Pine Provenance
growth habit
ornamental application
oldest pine
medicinal value research results of French medical circles on pine products
folk traditional pine therapy for common diseases
provenance of pine trees

Name: Pine
scientific name: Pinus
family and genus: Pinus
category: Forest conifer
medicinal: medicinal value
[edit this paragraph] morphological characteristics
evergreen tree. Most of them are tall trees. The height is 20 ~ 50 meters, up to 75 meters (American sugar pine P.).
A few are shrub like, such as P. pumila and P.
(var. pymaea). When it was young, the crown was pyramid shaped, and the branches were mostly in wheel shape. After the seedlings are unearthed and the cotyledons are unfolded, the first ones are the primary leaves, which are solitary, spirally arranged, linear lanceolate, and the leaf margin is toothed. After the primary leaves perform the function of leaves for 1 ~ 3 years, needles appear, usually in bundles of 2, 3 and 5, attached to the top of short branches. Each bundle of needles has a leaf sheath at the base, which falls off or persists in the early stage. The position of resin channel in mesophyll tissue is relatively constant in adult plants, which can be divided into three types: exophytic, mesophytic and endophytic. One or two vascular bundles can be seen in the cross section of pine needles. Vascular bundle merging can occur in double vascular bundle pine trees under special circumstances. The ball flower is unisexual and monoecious. Cones are mostly composed of seed scales and lignified after maturity. The exposed thickened part of the seed scale is called the scale shield, and the tumor like protrusion at the apex of the scale shield is called the scale navel. Some tree species have spiny scales and umbilicus, and some have no. When the cone is mature, the seed scales open and the seeds fall off; However, the scales of a few trees remain closed for a long time. Each species has 2 seeds, the upper part of the seed has a long wing, and a few have short wings or no wings
Pinus koraiensis (P.)
branchlet Pinaceae is the largest family in gymnospermae, with 10 genera and more than 230 species, including more than 90 species of Pinus. It is Pinaceae and the largest genus in the whole gymnospermae. Pine is the most important forest tree species in the northern hemisphere. Except for Sumatran pine, which is distributed to 2 degrees south latitude, all other species naturally grow in the mountains and fields from the equator to 72 degrees north latitude. Especially in temperate regions, pine plants not only have many kinds, but also often form a vast forest sea. Therefore, pine is known as the “mother of forests in the northern hemisphere”
pine trees have strong adaptability to terrestrial environment. They can endure a low temperature of – 60 ℃ or a high temperature of 50 ℃. They can grow in bare mineral soil, sandy soil, volcanic ash, calcareous soil, limestone soil and all kinds of soil from calcareous soil to red soil. They are drought resistant, barren and like sunshine. Therefore, they are famous pioneer tree species
the most obvious feature of pine is that its leaves are needle shaped, often in bundles of 2, 3 or 5 needles. For example, the leaves of Pinus tabulaeformis, Pinus massoniana and Pinus taiwanensis are 2 needles in a bundle, the leaves of Pinus bungeana are 3 needles in a bundle, and the leaves of Pinus koraiensis, Pinus armandii and Pinus quinquefasciatus are 5 needles in a bundle
pines are monoecious plants, and their spore leaves are arranged in cone shape to form female and male cones. The female cones are single or 2-4 at the top of the new branch, and the male cones are mostly concentrated at the lower part of the new branch. The cones of pine trees generally open in spring and summer, but after the pollen is transmitted to the female cones, it does not germinate until the early summer of the next year, fertilizing the female flowers and developing into cones (commonly known as pine tower or pine cones, not fruits). Cones mature after autumn, seed scales open, and each seed scale has two seeds
most species of pines are tall and straight trees with good material and many pillars. The “king of wood” in Northeast China – Korean pine, the tall tree species widely distributed in western North America (up to 75 meters) – western yellow pine, the fastest-growing pine native to the coast of California, radial pine, slash pine native to the southeast of the United States, Caribbean pine native to the Caribbean of America, European red pine widely distributed in the West and north of Eurasia, etc. are all famous timber trees
the ornamental value of pine trees is also obvious to all. In China, from the Royal classical gardens to the homes of modern residents, you can see the beautiful shadow of pine trees, such as Pinus tabulaeformis and Pinus bungeana in Beihai and the summer palace in Beijing, and the five needle pine widely used in stump bonsai. Some famous mountain resorts are even more famous for the strength of pine and pine for mountain. Huangshan pine in Huangshan, Huashan pine in Huashan, beauty pine in Changbai Mountain… All of them are amazing to visitors
China is one of the countries with the richest gymnosperm species in the world. From the perspective of Pinaceae alone, it can be fully demonstrated that China is truly the “hometown of gymnosperms”. In China’s vast mountains and forests, there are not only lush pine, larch, spruce and fir forests, but also many precious and rare pine species hidden in some deep mountains and dense forests. Among the first batch of rare and endangered plants under key protection announced by the state, there are 39 species of Pinaceae, accounting for 1 /10 of the total (389 species). Among them, silver fir is listed as the first-class key protected plants, 17 species such as Baishanzu fir and golden Qian pine are listed as the second-class key protected plants, and 21 species such as yellow branch yew and Mongolian Scotch pine are listed as the third-class key protected plants
20 years ago, few people in the world knew that there was a mountain called Baishanzu on the southeast coast of China. In 1976, Wu Mingxiang, senior engineer of Qingyuan County Forestry Institute in Zhejiang Province, made a “blockbuster”. The Baishanzu fir discovered and named by him made Baishanzu this “forgotten corner” shine in the world botany circle. Among the 50 known Abies species in the world, Abies Baishanzu is the most precious. Because on earth, only the southwest slope of Baishanzu peak in Zhejiang Province of China has this kind of tree growing. At present, only four trees are alive. This pair

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