OBJECTIVETo study species diversity and the host of Thesium chinense community.

METHODThe investigation on phytocoenology was carried out on the T. chinense community in 7 areas of Anhui Province and Jiangsu Province. The correlation between species diversity of community and T. chinense abundance was analyzed regarding to the abundance of species, the abundant index of species, species diversity index and community even index.

RESULT AND CONCLUSIONThe results showed that T. chinense liked light, warm climate, liked acidic to neuter soil. The majority of T. chinense distributed in the humid wasteland and herbaceous community. There was a positive correlation between the abundance of T. chinense and the unity numbers of community, and a negative correlation between the abundance of T. chinense and the abundance, coverage, diversity index, Pielou even index of community. T. chinense host species was various. This investigation found 28 host species belong to 11 Families, among them 5 Families and 18 species were found for the first time.