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Flora Studies on Aquatic Vascular Plants in Wetland of Guangxi Province
广西湿地水生维管束植物区系研究

Keywords: Guangxi,Wetland,Aquatic vascular plants,Flore
广西
,湿地,水生维管植物,区系

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Abstract:

There are 412 species of aquatic vascular plants belonging to 163 genera in 63 families, including pteridophytes (13 species, 6 genera and 6 families) and spermatophytes (399 species, 57 families and 157 genera) in wetland of Guangxi Province. All these species can be divided into 5 types (i.e. hygrophyte, hyperhydate, ephydate, pleustophyte, hyphydate) according to the morphological forms and ecological forms. The floristic elements of aquatic vascular plants in wetland of Guangxi are very complex. At the generic level, ninty-three tropical genera account for 78.14% of the total genera and twenty-five temperate ones account for 21.01%. At the species level, tropical and temperate elements contributed 53.73% and 30.15% of the total species, respectively. It is characterized by tropical. This phenomenon is caused by the broad latitudes and diversified habitats in Guangxi. Comopolition genera and species have 44 genera and 77 species, accounts for 26.99% and 18.69% of total genera and species, respectively. They are main components or key genera (species) in wetland vegetation. The endemism is scarce. Furthermore, threatened species and invasive species are also discussed.

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