The flora of hydrophytes in Shengjin Lake Nature Reserve of Anhui province was analyzed by quadrate research. 94 species, which belong to 63 genera in 37 families, were recorded. Among them pteridophyte had 4 families 4 genera 4 species, while 33 families 58 genera 90 species were angiosperm. Ceratopteris thalictrodies (L.) Brongn., Limosella aquatica L. and Soliva anthemifolia R. Br., three species new to Anhui were recorded in our research. The result indicated that species of hydrophyte in Shengjin Lake were abundant and the geographical composition was complex. The flora components included tropic, subtropic, North Temperate and Old World Temperate characteristics, but the subtropic was obvious.%通过样方调查,结合文献资料对安徽升金湖水生植物进行了区系分析,发现升金湖水生维管束植物37科63属94种,其中蕨类植物4科4属4种,被子植物33科58属90种.水蕨Ceratopteris thalictrodies(L.) Brongn、水茫草Limosella aquatica L.、裸柱菊Soliva anthemifolia R,Br.是安徽新记录种.区系分析表明,升金湖水生植物种类丰富,地理成分复杂,区系组成同时具有热带、亚热带、北温带和旧世界温带的成分,但以亚热带成分为主.
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