Sanjianshall Cephalotaxus fortune Hook. f.
The status quo is becoming more and more dangerous. The harringtonine is a subtropical endemic plant in China. Because its leaves, branches, seeds, and roots can extract a variety of plant alkaloids and can treat cancer, it is overutilized, and the number of resources is drastically reduced and it is in a state of becoming dangerous. If it is not protected, it may further fall into danger.
Morphological characteristics Evergreen Qiaocai, bark reddish-brown or brown, cracked sheet. The leaves are spirally arranged, the base is twisted in two rows, nearly horizontally, lanceolate, often slightly curved, about 5-8 centimeters long, 3-4 millimeters wide, and gradually tapering from the middle to the end. Acuminate long pointed, base wedge-shaped, bright green above, midrib uplift, white stomatal bands below, midvein evident. 8 to 10 male bulbs clustered into a head shape. The peduncles were 4 to 7 mm long. The females were peanuts at the base of the twigs and the total stems were 1-2 cm long. Seeds oval-shaped oval, 2-3 cm long, green when unripened, outside the white powder, cooked into purple or purple.
Distribution of harringtonia is more common in Guizhou, Weining, Panxian, Xiangyang, Zunyi, Guiyang, Chunan, Shibing, Leishan, Yinjiang, Songtao, Zhenyuan, Liping, Tuojiang, Dejiang, Jinping, Huangping There are distributions in Shiyi, Congjiang, Dushan and Tonglu counties. Its vertical distribution is relatively large, and it is distributed in hilly mountainous areas with an elevation of 800-2000 meters. Domestic Gansu, Shaanxi, Sichuan, Yunnan, Henan, Hubei, Hunan, Guangxi, Guangdong, Anhui, Jiangxi, Zhejiang, Fujian and other provinces and regions are also distributed.
Habitat and Ecology Due to the wide distribution of harringtonine, habitat is more complex. The climate in the eastern and central parts of the distribution area is a typical subtropical humid monsoon climate, with a warm and humid climate. The Weining and Panxian areas in the west of the distribution area have a semi-humid plateau climate, and the dry and wet seasons alternate more obviously. The daily temperature changes and Year-on-year changes are large and the heat conditions are poor. This also reflects the strong adaptability of cypress to climatic conditions. Most of the soil in the habitat is yellowish brown soil developed from clastic rocks such as sand shale, basalt, slate, and metamorphic rocks, and yellow-brown soil. There are also red-yellow soils at some lower elevations. The soil texture is thicker and often contains slopes. The litter and litter on the soil surface are relatively abundant, with pH values ​​mostly below 6-5.5. In some of the steep slopes, the soil erosion is more serious, and the harringtonia grows in the infertile habitat. C. cusmifolia is mostly distributed in subtropical evergreen broad-leaved forests, so C. cuspidata can adapt to the under-illumination light conditions and can normally grow and renew. The tree species associated with harringtonia are hookworms, shrubs, saplings, waxy flowers of large fruit, gladiolus, flowers, and herbs.
Protecting the value of harringtonine is an important medicinal plant in China. The plant alkaloid extracted from the plant has a certain effect on cancer treatment. In addition, its wood is solid and elastic, and it has many uses. Seed oil can be used to make soap and paint. Fruits have lungs, cough, and eliminate the effect of accumulation. Therefore, harringtonis is an important wild species with multiple uses. Economic plants have many protective values.
Protection measures Three cuspidata trees are often found in evergreen broad-leaved forests. Protecting the existing evergreen broad-leaved forests is the key measure to protect harringtonine. In addition, in the use of the resources of the three-harvested, we must pay attention to prevent excessive use, should be properly controlled the frequency and intensity of use, in order to protect the ability of the natural regeneration of the three-foot fir. The relevant forestry and resource use departments should pay attention to artificial breeding, introduction, cultivation, etc. while collecting and using wild resources, and gradually realize the use of artificially cultivated harrington.
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