References

For Rhodiola

Clausen, R.T. 1975. Sedum of North America north of the Mexican plateau. Cornell Univ. Press, Ithaca, NY. Google Scholar

Moran, R.V. 2009g. Rhodiola. In Flora of North America Editorial Committee. 2009. Flora of North America north of Mexico. Volume 8, Magnoliophyta: Paeoniaceae to Ericaceae. Oxford Univ. Press, New York, NY. 585 pp. Google Scholar

Thiede, J., and U. Eggli. 2007. Crassulaceae. In Kubitzki, K., C. Bayer, and P.F. Stevens, eds. 2007. The families and genera of vascular plants. IX. Flowering plants – Eudicots – Berberidopsidales, Buxales, Crossosomatales, Fabales p.p., Geraniales, Gunnerales, Myrtales p.p., Proteales, Saxifragales, Vitales, Zygophyllales, Clusiaceae alliance, Passifloraceae alliance, Dilleniaceae, Huaceae, Picramniaceae, Sabiaceae. Springer, Berlin. 509 pp. Google Scholar

Zhang, J.-Q., S.-Y. Meng, J. Wen, and G.-Y. Rao. 2014. Phylogenetic relationships and character evolution of Rhodiola (Crassulaceae) based on nuclear ribosomal ITS and plastid trnL-F and psbA-trnH sequences. Syst. Bot 39: 441-451. Google Scholar

Zhao, T., G. Wang, Q. Ma, L. Liang, and Z. Yang. 2020. Multilocus data reveal deep phylogenetic relationships and intercontinental biogeography of the Eurasian-North American genus Corylus (Betulaceae). Molec. Phylog. Evol. 142: 106658. Google Scholar