A PRELIMINARY STUDY ON THE SEED PLANTS FLORA OF BANQIAO MOUNTAINOUS REGION IN ANHUI PROVINCE

There are 981 species of seed plants,belonging to 131 families and 513 generain Banqiao Mountainous Region(BMR). Compared with six adjacent mountains,the integrative coefficient of angiosperm flora in BMRis 0. 059,which is bigger than those ofMt. Qingliangfeng, zhawan and Liugujian. Hence, the flora is relatively rich. Accordingto the geographic distribution of 513 genera of seed plants in BMR,they can be groupedinto 14 distribution types,among which the temperate elemellt makes up 34. 3% whilethe tropical element makes up 65. 7%, taking a predominant position. The resultsshows:this flora has subtropical characteristics and the floristic geographical elementsare complex. By analysis of the floristic relationship between BMR and adjacent mountains, the species similarity coefficients between this flora and Mt. Huangshan, Tianmushan, Tiantangzhai, Lushan, Shennongjia, Huangzangyu are in sequence order of 79.1 %,73. 1 %,59. 3 %,48. 3 %,41. 7%,28. 7 %,respectively.