Taxodiaceae
Latin scientific name: Taxaceae
English name: YewFamily,TaxusFamily
Brief introduction:
Evergreen trees or shrubs. Leaves spirally arranged or crossed opposite, striate or lanceolate. Male cones solitary leaf axils or bract axils, or spikes collected at the top of branches, stamens numerous, each with 3-9 anthers, loculi longitudinally lobed, pollen without air sac Female cones solitary or paired to leaf axils or bract axils, with numerous imbricate or cross-opposite bracts at base, ovules 1, erect, on bract axils at top of cone axis or lateral short axis, base with actinomorphic discoid or funnel-shaped integument. Seeds drupelike or nutlike, wholly or partly enclosed by fleshy aril, endosperm rich, cotyledons 2.
There are about 23 species in 5 genera, all of which are found in the northern hemisphere except 1 species of AustrotaxusspicataCampton1 in the southern hemisphere. There are 4 genera, 12 species, 1 variety and 1 cultivated variety in China.
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Rapid Seedling raising technique of Taxus mairei
Taxus, also known as yew, evergreen tree, is 25 meters high and is a rare tree species in the world. It is distributed in Yunnan, Xizang, Heilongjiang, Jilin, Hubei, Sichuan, Guangxi, Jiangxi and other provinces in China. According to the study, paclitaxel extracted from its skin, roots and leaves has a special effect on the prevention and treatment of cancer, leukemia and AIDS. Paclitaxel is more expensive than gold, so yew is known as the golden tree. The experiments of forestry experts have proved that this tree can be planted in the north and south of our country, and a set of nursery formula to break seed dormancy has been found.
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Brief introduction and planting method of Taxus chinensis
The yew is also called the yew. Also known as red cypress pine. Taxus mairei, a national first-class rare and protected tree species, is a shallow-rooted plant. The main root is not obvious and the lateral root is well developed. It is recognized as an endangered natural rare anticancer plant in the world. It is an ancient tree species left over from Quaternary glaciers and has a history of 2.5 million years on earth. Due to the slow growth rate and poor regeneration ability of Taxus under natural conditions, there has been no large-scale yew raw material forest base in the world for a long time. Due to the extraction of Taxus
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