5Essig F B.1991.Seedling morphology in Clematis (Ranunculaceae) and its taxonomic implications.Sida,14:377-390.
6Leifert C,Camotta H,Waites W M.1992.Effect of combinations of antibiotics on micropropatated Clematis,Dephinium,Hosta,Iris and Photenia.Plant Cell Tiss.Org.Cult.,29:153-160.
7Mandegaran Z,Sieber V K.2000.Somatic embryogenesis in Clematis integrifolia×C.viticella.Plant Cell,Tussue and Organ Culture,62:163-165.