关键词: 湿地, 维管束植物, 区系特征, 广西

Abstract: 711 species of wetland vascular plants belonging to 314 genera and 120 families (including 9 subspecies,22 varieties and 1 forms) have been found so far in Guangxi,China.Among them,Pteridophytes had 26 species belonging to 17 genera and 15 families,Gymnospermae 5 species belonging to 4 genera and 2 families,and Angiosperms 680 species belonging to 293 genera and 103 families.The dominant families were Cyperaceae,Gramineae,Polygonaceae,Urticaceae,Scrophulariaceae,Composita,Hydrocharitaceae,Araceae,Eriocaulaceae,Commelinaceae,Labiatae,Ranunculacea,Umbelliferae,Lentibulariaceae and Onagraceae,andthe dominant gena were Polygonum,Cyperus,Fimbristylis,Eriocaulon,Eleocharis,Utricularia,and Carex.The floristic geographical components of the wetland vascular plants of Guangxi were multiform,in which the families could beclassified into 8 areal types and 5 subtypes,and the gena classified into 12 areal types and 9 subtypes.The wetland vascular flora had the following features:(1) herbs were well developed;(2)species of polytypic gena were more,while those of monotypic and olygotypic gena were fewer;(3)tropical floristic elements were dominant;(4) both gena and species endemic to China were poor.

Key words: wetland, vascular plants, floristic characteristics, Guangxi,China