Study on the flora of the seed plants from Lichuan of Hubei

According to investigation and statistics,there are 2 028 species of wild seed plants among them,1 002 species of woody plants and 1 026 species of herb,which belong to 750 genera and 145 familes,including 24 species of gymnosperms belonging to 19 genera and 6 families,and 2 004 species of gymnosperms belonging to 731 genera and 139 families;The flora is archaic,relic and pristine;single-species and few-species genera are rich.The types of distribution are various and geographical elements are complex,there are 15 types and 21 subtypes for genera of seed plants in this area.The amount of tropical families is 61.25%,and the amount of temperate families is 36.36%.The amount of tropical genera is 39.05%,and the amount of temperate families is 55.62%.According to this analysis,this flora shows temperate and subtropical in nature,but the temperate elements are superior.