Distribution Investigation and Protection Analysis of Wild Resources of Physochlainae Radix in China
To comprehensively evaluate the wild distribution and resource status of Physochlaina in-fundibularis,the medicinal source plant for traditional Chinese medicine Physochlainae Radix,and to provide scientific basis for its utilization and protection,methods such as field investigation,inter-view,and literature review were used to study the distribution,resource quantity,and threats faced by Physochlaina infundibularis in China.Furthermore,suggestions for its protection and utilization were put forward.Physochlaina infundibularis is sparsely distributed in the middle and eastern parts of the north slope of the Qinling Mountains,the middle and western sections of Zhongtiao Mountain,Funiu Mountain,Dabie Mountain,and Taihang Mountain.It can be found in deciduous forests,for-est edges,shrub-grasslands,cliffs,slope valleys,and rubble,with scarce resources.The main threats it faces are overexploitation and continuous excavation.Measures should be taken to protect and cultivate Physochlaina infundibularis in situ and ex situ,research and promote standardized and efficient planting techniques,select and breed excellent varieties,and comprehensively utilize re-sources,so as to expand the resource quantity of Physochlaina infundibularis.