Preliminary investigation on poisonous vascular plant resources in Guizhou Province
Due to the unique mountainous environment and complex climatic conditions,Guizhou has abundant poi-sonous plant resources.At the same time,Guizhou is a gathering place for ethnic minorities,and the use of toxic plants has strong ethnic characteristics.In order to strengthen the identification of poisonous plants,effectively avoid the risk of toxicity,and better develop and utilize toxic plant resources,this study analyzed the resource distribution,life form compo-sition,toxicity characteristics and utilization value of the species according to literature collection and field investigation of poisonous vascular plants in Guizhou.There are 523 species of poisonous vascular plants in Guizhou,belonging to 336 genera in 113 families,among which the dominant families are Fabaceae,Asteraceae,Apocynaceae,Euphorbiaceae,Eri-caceae and Araceae,the dominant genera are Rhododendron,Euphorbia,Solanum,and Arisaema.Herbs are the most common type of life form,accounting for 48.56%,followed by shrubs.Poisonous species are more abundant in southern and southwestern Guizhou.The poisonous parts are mainly toxic by the whole plant,accounting for 42.48%.The poison-ous components are mainly glycosides,accounting for 43.40%.The clinical manifestations of acute poisoning of the diges-tive system are the most common,accounting for 65.97%.Medicinal plants are mainly whole plants,accounting for 41.49%,and the main medicinal functions are used in orthopedics,accounting for 42.26%.Their utilization value in-cludes 45 edible,138 ornamental,201 economic,and 478 medicinal.The investigation of the poisonous vascular plant re-sources in Guizhou has an important reference value for the identification and popularization,poisoning prevention and con-trol and detection,investigation of poisoning cases,poison traceability,in-depth research and rational utilization and devel-opment of the poisonous plants.
Guizhoupoisonous vascular plantresource surveydevelopment and utilization