2. Willow, a deciduous tree, with slender branches, soft and drooping, likes wetlands, with a height of 20-30 meters and a diameter of 50-60 cm, and grows rapidly; The bark tissue is thick, longitudinally cracked, and the center of the aged trunk is rotten and hollow. The branches are slender and drooping, brownish green and hairless; Winter buds are linear and close to branches. Leaves alternate, linear-lanceolate, 7-15cm long and 6-12mm wide, with sharp tips, serrated edges with small glands, dark green surface, grayish white back, smooth and hairless surfaces and stipules. After the leaves bloom, the male inflorescence is a short peduncle, slightly curved, and is 1- 1.5 cm long. The fruit is a capsule with 2 petals at maturity, containing many seeds with a tuft of hairs on them. Cutting propagation in Taiwan Province Province, introduced in the late Ming Dynasty, has a history of more than 300 years. It has strong resistance to air pollution and dust and is suitable for growing in urban gardens, especially by pools or streams.
Poplar is the most widely distributed and adaptable tree species in the world.
Mainly distributed in temperate and cold temperate forest trees in the northern hemisphere, latitude 22-70, altitude as low as 4800 meters.
Poplar natural forest covers an area of more than 20 million hectares (poplar is the dominant tree species in the world), and there are about 100 natural tree species. The countries with the widest distribution of natural poplar varieties are Russian, China, Canadian, American, Italian, French and other countries.
China is rich in poplar resources, and the national natural forest area is about 3 million hectares. There are as many as 53 natural species in China, which are widely distributed. From sweet poplars and poplars in Daxinganling, the northernmost part of China, to Yunnan poplars in the south; From east to west, there are Populus euphratica, Populus alba and Populus alba in the west.
4.
Five-pointed maple (five-pointed maple)
Deciduous trees, up to 20 cm tall. The bark is thin and there is often milk in the twigs. The single leaf is opposite, the lobe diameter is 7 cm- 15 cm, usually palmately 5-lobed, the base is often heart-shaped, the lobe is ovoid, entire, both sides are hairless or there are tufts of hairs only in the axils of lower leaves. Flowers mixed, corymb terminal. The fruit is flat, the wings of the fruit are spread at a pure angle, and the wings are twice as long as nuts. The flowering period is April-May, and the fruiting period is 9-65438+1October. Mainly produced in the Yangtze River basin, southwest, north China, southeast, west to Sichuan, with Shaanxi being the most widely distributed.
Ginkgo tree, deciduous tree, dioecious, with fan-shaped leaves. The wood is dense and fine, mostly carved and chopping boards. , durable. Because of the long production cycle, it is also called gongsunshu. However, due to the improvement of production technology, the ripening and fruiting time of Ginkgo biloba is shortened, the fruit production period is prolonged and the yield is greatly improved. This tree can be over 1000 years old. Ginkgo tree has the characteristics of strong resistance, strong adaptability and strong reproductive ability. Leaves can be used as medicine to produce ginkgo tea and Chinese patent medicine products, which have the therapeutic and health-care functions of preventing and treating cardiovascular and cerebrovascular diseases, resisting virus, diminishing inflammation, resisting platelet activating factor, delaying aging, beautifying and so on.
Ginkgo biloba, the fruit of the woody plant Ginkgo biloba, has a white shell and an almond-shaped kernel, so it is named Ginkgo biloba, also known as Ginkgo biloba. The oval-shaped fruit is also called "Big Buddha Finger" and "Madaling" because of its different varieties and shapes. There is an orange seed coat outside the fruit, and nuts can be eaten or used as medicine.
Buxus macrophylla: evergreen shrub or small tree, up to 5 meters high, belonging to temperate and subtropical tree species.
Luan tree: deciduous tree. Gundam 15m, light-loving, slightly shade-tolerant and cold-resistant.
Elm: alias: white elm, domestic elm, etc. Positive tree species, light-loving, drought-tolerant, cold-resistant and barren-tolerant.
Lycium barbarum: nickname: Lycium barbarum, deciduous shrub, up to 2 meters. Branched, slender, arched, angular and usually spiny.
1. Catharanthus roseus: Catharanthus roseus, alias: Ririxin, Ririxin, Sunflower, Four Seasons Spring, Five Petals Plum, Wild Gooseberry Red. The whole herb can relieve pain, diminish inflammation, sleep, relax bowels and induce diuresis. The alkaloids contained in its milk, such as vinblastine and vincristine, are extracted and used as chemotherapy drugs for various cancers, such as leukemia and Hodgkin's disease. Because of its strong heat resistance, long flowering period, bright color and rapid development, it has occupied a certain position in herbal flowers. Catharanthus roseus likes a warm, slightly dry and sunny environment. Catharanthus roseus is a light-avoiding plant, so there must be enough sunshine and not too much water during the growing period. Catharanthus roseus shoots at the top, and there are two flowers between the axils of each leaf, so it has many flowers, special flowering period, lush flowers and vitality. Flowers never stop from spring to autumn, so it has the reputation of "sunny spring". Warning, warning, warning:: Catharanthus roseus is a bamboo plant, Catharanthus roseus is a bamboo plant, and Catharanthus roseus is a bamboo plant. The white milk that flows out when its stems and leaves are broken, and the white milk that flows out when its stems and leaves are broken, is extremely toxic and toxic, and must not be eaten by mistake. ! ! ! Flower language of Catharanthus roseus Flower language of Catharanthus roseus Flower language of Catharanthus roseus: happiness, memory, eternal youth and constancy.
2. Bougainvillea, Jasmonaceae, Bougainvillea. Alias: bougainvillea, clover, towel quilt, azalea, bougainvillea, bougainvillea, bougainvillea, paper flower, mirabilis jalapa, etc. It is an evergreen climbing shrub. Like warm and humid climate, not cold-resistant, can safely overwinter above 3℃, and bloom above 15℃. I like plenty of light. Flowers are terminal, thin, small and yellow-green, and their appearance is not surprising and unnoticed. Usually, three flowers are clustered on three large bracts, and the pedicel is combined with the midvein of the pill. The bracts are oval and are the main ornamental parts. Bracts are bright red, orange yellow, purple red, milky white and so on. From the leaves, it can be divided into two types: mosaic type and ordinary type; Bracts are divided into single petals and double petals; There are about 40 different kinds of towels. Bracts are shaped like gorgeous petals, so they are called bougainvillea and bougainvillea. In winter and spring, colorful bracts are displayed, giving people a feeling of unrestrained enthusiasm, hence the name He Chunhong.
3. Rhus vernicifera is an evergreen arbor plant with a height of more than 20 meters. Young branches with stripes and gray tomentose. Odd pinnate compound leaves. I like sunny, hot and humid environment, suitable for the growth of deep and fertile acidic soil, with strong adaptability, cold resistance, wind resistance and air pollution resistance. Guangdong is widely cultivated in urban and rural areas from the middle to the southwest, as a fruit tree and garden ornamental greening tree species. The crown of this tree is wide and dark, which is very beautiful. It is an excellent tree species for "four sides" and landscaping, and is also suitable for street trees. It is also a medicinal plant, and its fruit, root bark and leaves can be used as medicine. The shape of human face fruit is imaginary, but the use of human face fruit is real. Fresh fruit can be eaten raw, equivalent to fruit; You can also marinate it, or make adult noodle sauce with lobster sauce and pepper, which is delicious. Fruit is also used as medicine. According to the Records of Lingnan Materia Medica, "People have a flat face, sweet taste, sober up and detoxify, cure wind, poison and itch, and relieve sore throat." Seeds in fruits can also be pressed to make soap. Its real multi-purpose surface tree is recognized by people for its high economic and ecological benefits.
4. Osmanthus fragrans, Oleaceae, also known as "laurel" and "Oleaceae", commonly known as "osmanthus tree". Evergreen shrubs or small trees are temperate tree species. The leaves are opposite, mostly oval or rectangular, smooth, leathery and serrated. Osmanthus fragrans leaves are lush and evergreen, and the trees are long in age. They bloom in autumn and are full of fragrance. It is a unique ornamental flower and aromatic tree species in China. Medicinal use: the fruit of osmanthus tree has the effects of resolving phlegm, promoting fluid production, warming stomach and calming liver. The decoction of branches, leaves and roots can be applied to the affected area to activate bones and muscles to relieve pain and treat rheumatism and numbness. Cinnamon is a good carving material because of its dense wood, beautiful texture, not easy to crack and smooth plane. Osmanthus fragrans has a long history of cultivation in China. The earliest reference to osmanthus fragrans in the literature is the Mountain and Sea Classic Nanshan Scene in the Old Warring States Period (475 BC-2265438 BC+0 BC), which means "Fragrant osmanthus fragrans all over the mountain". Qu Yuan (340-278 BC)' s "Nine Songs of the Chu Dynasty" also includes: "Help Beidou to drink osmanthus pulp, and Xinyi car is a laurel flag". From the Han Dynasty to the Wei, Jin, Southern and Northern Dynasties, Osmanthus fragrans has become a valuable flower and exquisite tribute. In the early Han dynasty, it was introduced into the palace clamp garden and was successful. Since the Tang and Song Dynasties, osmanthus planting has become popular. In the Tang Dynasty, it was very common for literati to plant osmanthus, and chanting osmanthus became a common practice. There is a famous sentence in the poem Lingyin Temple in the Song Dynasty, "Osmanthus fragrans is in the middle of the moon, and the fragrant clouds float outside", so later generations also call it "Tianxiang". After Tang and Song Dynasties, Osmanthus fragrans was widely used for garden cultivation and appreciation. In the poem Osmanthus fragrans written by Ni Zan in the Yuan Dynasty, there is a phrase that "the leaves of osmanthus fragrans are dusk, and the light and shadow in autumn are dim", which shows the situation of planting Osmanthus fragrans in front of the window. Folk cultivation of osmanthus fragrans began in the Song Dynasty and flourished in the early Ming Dynasty. Five osmanthus producing areas in the history of China were all formed here.
5. Huanghuai is a genus of Cassiaceae, which is divided into woody plants and semi-deciduous trees. It is a positive plant, tolerant to semi-shade, like high temperature and humid climate, resistant to early weather and not resistant to wind. Lush foliage, up to 5-7 meters high. Leaves small oval, even pinnate compound leaves. Pinnate leaves often meet at night. At night, you can pay attention to the leaves of this variety. The leaves of the whole tree are folded, as if you want to sleep at night. Common mimosa also has this phenomenon of night closure. In winter,1February is the defoliation period. Flowers are yellow, with racemes, inserted at the ends of branches and many flowers. Bright yellow flowers are blooming all the year round, and may-June and September-165438+1October are in full bloom. The pods are flat and beaded, seven to twelve centimeters long, and the seeds are dark brown. Huanghuai enjoys high temperature, drought tolerance, heat tolerance, easy cultivation and rapid growth. Because the roots are shallow and the wind is strong, it is easy to fall down. Originated in India, Sri Lanka, Southeast Asia and Oceania, it was introduced into China and cultivated as a garden plant in the southeast and south of China.
Garden value Garden value Garden value Garden value: It is a beautiful flower viewing tree, garden tree and street tree with dense branches and leaves, graceful posture, long flowering period, golden and brilliant color and rich tropical characteristics.
6. Cinnamomum camphora is also a city tree in Hangzhou, Zhejiang, Maanshan, Anqing, Changsha, Ezhou, Hubei, Mianyang, Sichuan and Guiyang, Guizhou. Leaves thinly leathery, veins 3 from base. The first or second pair of lateral veins near the base of leaves are long and prominent, with white powder on the back and glandular spots in the axils of leaves. Cinnamomum camphora is an evergreen tree of Lauraceae. It has a long survival period, can grow into a towering ancient tree for hundreds of years, and has a strong ability to smoke and dust, conserve water, fix soil and prevent sand, and beautify the environment. In addition, it can resist tidal wind, smoke and toxic gases, and can absorb a variety of toxic gases, which is more suitable for urban environment. This species is an important timber and special economic tree species in subtropical region (southwest region). Camphor and camphor oil can be extracted from roots, trees, branches and leaves. Camphor is used in medicine, plastics, explosives, antisepsis and pesticides, and camphor oil can be used as raw materials for pesticides, mineral processing, soap making, fake paint and essence. Wood is of excellent quality, resistant to pests and moisture, and can be used in construction, shipbuilding, furniture, cabinets, sheets and sculpture. The wood of camphor tree is antiseptic, insect-proof, dense and fragrant. It is a good material for making furniture and sculptures; Besides being used for extracting camphor, or being cultivated as street trees and landscape trees, camphor also has the effects of strengthening the heart, relieving fever and killing insects. If you go outdoors in summer, you can try: pick the leaves of camphor tree, crush them and apply them on the surfaces of hands and feet, which has the effect of preventing mosquitoes. Scientific research has proved that chemical substances such as terpinebicyclic hydrocarbon, camphene, limonene and eugenol emitted by camphor tree have the ability to purify toxic air, prevent cancer and filter out fresh and clean air, which makes people feel refreshed. Living in an environment with camphor trees for a long time will avoid suffering from many incurable diseases. Therefore, Cinnamomum camphora has become the first choice for landscaping in many cities and regions in the south, and is favored by the landscaping industry.
7. This species of Brucea javanica has dense branches, dark green branches and fragrant flowers. It is a good garden ornamental plant and can also be potted.
8. oleander oleander belongs to oleander family, and its milky juice contains a toxic substance called oleanolin, which will be poisoned if eaten by mistake. Stem bark fiber is an excellent blended raw material; Leaves and stem bark are highly toxic, so use them with caution when decocting or grinding. It can strengthen the heart, induce diuresis, relieve asthma and relieve pain. Used for heart failure, wheezing and coughing, epilepsy, traumatic injury and swelling and pain. It can also be used to make pesticides, which is fatal to people and animals.
This species has strong resistance to toxic gases such as sulfur dioxide and chlorine. Roots and bark contain cardiac glycosides, phenolic crystals and a small amount of essential oil. There is a thin layer of wax on the leaves of oleander. This layer of wax can keep moisture and heat for leaves and make plants resist the cold. Therefore, oleander is not afraid of cold, and its green posture remains unchanged in winter. The flowers of oleander are very fragrant. Flowers are concentrated on the branches, gathering together like an open umbrella. The flowers of oleander are funnel-shaped with overlapping petals. There are three kinds of oleanders: red, yellow and white. Among them, red is its natural color, and "white" and "yellow" are new varieties cultivated artificially for a long time.
9. Araceae plants with spring plumage have huge leaves, deep plumage, dark green and luster, long and thick petioles, developed aerial roots and drooping, beautiful plant shape and good overall ornamental effect; At the same time, it is tolerant to shade and is an excellent indoor shade-loving foliage plant. Suitable for the layout of hotels, family halls, indoor gardens, offices, living rooms, study rooms, etc. It can be placed in strong indoor light for several months, and the growth of plants will not be greatly affected; You can also watch it in the darkroom for 2-3 weeks. It is also often used as a large potted plant, which is very spectacular in the hall.
10. The new leaves of Ficus of Moraceae are golden yellow, and the color of the old leaves or shady side turns green. This species is a good tree species for street trees and shade trees in South China with dense branches and leaves and enlarged crown. It can become the main landscape of lawn greening, and can also be planted in the green space of highway isolation belt, which is resistant to pruning and can be shaped into various shapes of colorful landscapes. It can also be mixed with other foliage herbs, such as green amaranth, to form a touching color contrast. Big trees have strong resistance to harmful gases and smoke, and are suitable for planting in street trees, industrial and mining areas, squares, forest parks and other places, with great momentum. 1 Ancient banyan trees can shade several hectares for hundreds of people to gather.