关键词: 四药门花, 金缕梅科, 分布区, 保护植物, 保护建议

Abstract: Based on the analysis of references and internet resource databases, including flora, specimens, and pictures, and also the field survey on some of the wild survive sites, the taxonomic status, research advance es, specimen records, places of origin and habitats, and the present endangered situation of the key national protected grade II plant Loropetalum subcordatum, were summarized in this paper, so as to providing some information for its survivals and development. There had been more than 160 years since the specimen was collected in 1857 and named in 1861 first found in Hong Kong. According the research, its areal range was enlarged from endemic to Hong Kong, to Guangxi, Guizhou and Guangdong. The population found by authors in Shangchuan Island Macaque Provincial Nature Reserve of Taishan, Guangdong in January, 2019, was the most southern and relative low altitude population found at present. The main cause of its endangerment was its disjunctive distribution, low fecundity, disturbance of the habitat. Some suggestions on the protection measures were put forward in this paper.

Key words: Loropetalum subcordatum, Hamamelidaceae, distribution area, protected plant, protective suggestion