Floristic study of species endemic to Henan Province

The species endemic to Henan are presented and their floristic characteristics are analyzed in this paper. The results are as follows:(1)There are 42 endemic species in 37 genera of 25 families;(2)64% of them are herbs(mostly being Perennial). This is similar to the flora of Henan. And majority of them belong to terrestrial mesophyte;(3)They can be divided into six distribution patterns,among which species belonging to West Mountains of Henan are the most abundant,making up 60% of the total;(4)The endemic species are mostly concentrated in four areas:Mountain in West Henan,Mountain in South Henan,Mountain in Northwest Henan as well as around the Yellow River in Central Henan,more than half of them being in the Mountain in West Henan.