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Bulletin of Botanical Research ›› 2005, Vol. 25 ›› Issue (4): 495-502.doi: 10.7525/j.issn.1673-5102.2005.04.023

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A study on the flora of seed plants in Ruyuan county region of Guangdong Province

DUAN Dai-Xiang, ZHAO Nan-Xian, YE Hua-Gu, CHEN Yi-Zhu   

  1. South China Botanical Garden, the Chinese Academy of Science, Guangzhou 510650
  • Received:2004-01-07 Online:2005-12-15 Published:2016-06-14

Abstract: Ruyuan County islocated in north of Guangdong Province, at 24°28'~25°06'N.and 112°52'~113°29'E.According to our investigations and statistics, there are 1 910 species of wild seed plants which belong to 753 genera and 171 families in Ruyuan County.Based on their geographical distribution, 171 families are classified into 11 areal-types, among them Pan-tropical element is dominant(57.14%), and the tropical elements make up(68.57%).753 genera are classified into 15 areal-types, among them Pan-tropical element is dominant(21.26%), and the tropical elements make up 58.19%.1 910 species are classified into 15 areal-types, among them endemic to China element is dominant(53.53%), and the tropical elements make up(29.25%).The dominant families in this area are Actinidiaceae, Lardizabalaceae, Styracaceae, Cornaceae, Rubiaceae, Hamamelidaceae, Theaceae, etc.Most of them are tropical and subtropical families.Comparing the Composition of the flora with those of 4 neighbouring regions, the flora of Ruyuan is quite similar to those of Lechang.

Key words: Ruyuan County, Seed plants, Flora