河南小秦岭自然保护区种子植物区系初步研究

Study on the Floristic Spermatophyte of Xiaoqinling Natural Reserve(XQLNR) in Henan

XQLNR is located between Henan and Shanxi Province, belonging to the branch of Qinling Mts stretching northeast. It is rich in spermatophyte because of the advantages of its physiographic conditions. Based on the statistical study on 117 families, 589 genus and 1679 species in the present vegetation, all families are divided into 10 distributional types, genus into 15 and species into 14 distributional types and 24 subtypes. The flora shows temperate characteristic with some tropical elements, rich in ancient monotypic or oligotype genus and primitive types. The flora contacts closely with Qinling Mts.,especially with its north slope, and there are a lot'of common endemic species between them, there exists ancient endemic phenomenon (endemic species) in the flora.