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CONTENTS
There are about 280 species or varieties of Guizhou endemic or stenochor spermatophyta, accounting for 5.6% of the total number of spermatophyta in Guihou. There are 67 families and 146 genera of endemic plants, accounting ofr 35.4% and 11.4%, respectively, of the family and genus of Guizhou spermatophyta. Moreover, 38 families and 71 species (including 2 varieties) of rare and threatened plants that are key state-protected distribute naturally in the porvince, accounting for 18.3% of the national total. There also exist 31 Chinese endemic monotype genera and 5 Guizhou endemic singular genera, accounting for 50.1% and 8.2% of total Chinese endemic genera respectively. All these plants constitute important content and key elements of Guizhou flora and biodiversity of botany ecosystem. These endemic and rare plants do not have scientific significance for their ecology and biodiversity, but also usable value. If statistics is used for their utilization once for each species, the largest is garden ornamental plant accounting for 66% of the Total; The next will be medicinal and timber plants, accounting for 16% and 8% respectively; the last one is oilseed plant accounting for 6%. There are other plants of fiber, aroma and forage. Modern botany is adopted in this book, combined with research means of traditional botany and the latest research methods of plantresource conservation, development and use. With the help of the newest findings of other disciplines, plenty of scientific experiments and analytical researches have been conducted on the origin and evolution, florical geography, properties, systematic classification, plant ecology and habit, resource conservation, resource evaluation and sustainable use of Guizhou endemic and rare plants. Resource biology and usable value of 340 species of Guizhou endemic and rare spermatophyta have been introduced in detail. More than 60 of them have been selected for a deepened study on introduction and domestication, seedling propagation and cultivation, economic characteristics, resource conservation and sustainable utilization. All these have made a breakthrough with good results in theory and application, which can be popularized in selection and development of new varieties, conservation of natural resources and ecological environment, research and utilization of new resources for agriculture, forestry, horticulture and medicine.
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