sioboldii were studied in this thesis,which consists of three parts as follows: Chapter 1 The recent development of smilax of Liliaceae The recent development of the chemical constituents and bioactive study on smilax of Liliaceae are briefly reviewed.

A preliminary phylogeny study and RAPD analysis of Sect. Macranthae Kunth. in Smilax L;

The Development of the Studies of the Chemical Components of Smilax Plants;

Studies of systematic evolution and karyotypic variation in Smilax and Heterosmilax (Smilacaceae);

Investigation Resource of Medicinal Plants of Smilax L.;

Plant Resources Investigation of Smilax L.in Huayingshan Mountains of Chongqing City;

Studies of systematic evolution and karyotypic variation in Smilax and Heterosmilax (Smilacaceae);

Macromorphology of seeds and micromorphology of the seed-coat in 53 species and 5 varieties belonging to three genera (Smilax, Heterosmilax and Ripogonum) of Smilacaceae were observed under the light microscope and the scanning electron microscope (SEM).

The results were summarized as follows:Pollen from 125 species of Smilax, Heterosmilax and Ripogonum was examined using light and scanning electron microscopy.

The results were summarized as follows:Pollen from 125 species of Smilax, Heterosmilax and Ripogonum was examined using light and scanning electron microscopy.

A phylogenetic analysis of the Smilacaceae based on morphological data;