1. Chase, M.W., Soltis, D.E., Olmstead, R.G., Morgan, D., Les, D.H., Mishler, B.D., Duvall, M.R., Price, R.A., Hills, H.E., Qiu, Y.-L., Kron, K.A., Rettig, J.H., Conti, E., Palmer, J.D., Manhart, J.R., Sytsma, K.J., Michaels, H.J., Kress, W.J., Karol, K.G., Clark, W.D., Hedren, M., Gaut, B.S., Jansen, R.K., Kim, K.-J., Wimpee, C.F., Smith, J.F., Frunier, G.R., Strauss, S.H., Xiang, Q.-Y., Plunkett, G.M., Soltis, P.S., Swensen, S.M., Williams, S.E., Gadek, P.A., Quinn, C.J., Eguiarte, L.E., Golenberg, E., Learn, G.H., Graham, S.W., Barrett, S.C.H., Dayanandan, S. andAlbert, V.A. 1993. Phylogenetics of seed plants: an analysis of nucleotide sequences from the plastid generbcL. Ann. Missouri Bot. Gard.80: 528–580.
2. Chang, H. 1985.Cnidium, Ligusticum.In R. Shan and M. Sheh, eds., Flora Rreipublicae Ppopularis Sinicae, Tomus55(2). Science Press, Beiging (in Chinese).
3. Cronquist, A. 1988. The Evolution and Classification of Flowering Plants. The New York Botanical Garden, Bronx, New York. pp. 410–413.
4. De Candole, A.P. 1830. Umbelliferae.In De Candolle, Prodromus Systematis Naturalis Regni Vegetabilis. Vol. 4. pp. 55–250.
5. Doyle, J.J. andDoyle, J.L. 1987. A rapid DNA isolation procedure for small quantities of fresh leaf tissue. Phytochem Bull.19: 11–15.