Flavone and steroid chemical constituents from rhizome of Paris axialis Paris caobangensis Y. H. Ji, H. Li & Z. K. Zhou (Trilliaceae), a new species from northern Vietnam Studies on Pollen Morphology of Four Genera of Trilliaceae Paris cronquistii (Takht.) H.Li var.brevipetalata H.X.Yin et H.Zhang,A New Variety of Paris (Trilliaceae) from Sichuan,China Four new synonyms in the genus Paris (Trilliaceae) Paris polyphylla var. emeiensis H. X. Yin, H. Zhang & D. Xue, a new variety of Trilliaceae from Sichuan, China Paris xichouensis, a new combination of Trilliaceae from China Chemical constituents from herbs of Paris verticillata Medicinal values and their chemical bases of Paris