河南省水生种子植物的生物多样性及区系特征

论述了河南省水生种子植物的生物多样性及区系组成。结果表明,河南水生种子植物有30科、61属、125种、1亚种、9变种及2变型,其中以挺水植物为主,有75种、1亚种、5变种、2变型;浮水植物次之,有33种2变种;沉水植物较少,有17种2变种。河南省水生植物的区系成分中,以泛热带、北温带和旧世界热带3种成分为主,其次是东亚和东亚北美间断成分和旧世界温带成分,植物区系中热带成分和温带成分几乎并重。

Diversity and Floristic Characteristics of Aquatic Seed Plants of Henan Province in China

Diversity and floristic characteristics of aquatic seed plants of Henan Province in China are discussed in the paper.There are aquatic seed plants of 30 families,61 genera,125 species,1 subspecies,9 varieties and 2 forms in Henan Province,including emerged plants of 75 species,1 subspecies,5 varieties and 2 forms,floating plants of 33 species and 2 varieties,submerged plants of 17 species and 2 varieties.The pantropic,the north temperate and the old world tropical components are main components,followed by the East Asia and North America disjuncted and the old world temperate components.The proportions of the tropic and the total of all the temperate components are similar.