For Thalictrum
Park, M.M. 1992. A biosystematic study of Thalictrum section Leucocoma (Ranunculaceae). Ph.D. dissertation, Pennsylvania State University.
Park, M.M., and D. Festerling, Jr. 1997. Thalictrum. In Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Volume 3, Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York, NY. 590 pp.
Ro, K.E., and B.A. McPheron. 1997. Molecular phylogeny of the Aquilegia group (Ranunculaceae) based on internal transcribed spacers and 5.8S nuclear ribosomal DNA. Biochem. Biochem. Syst. Ecol. 25: 445-461.
Tamura In Kubitzki, K., J.G. Rohwer, and V. Bittrich, eds. 1993. The families and genera of vascular plants. II. Flowering plants – Dicotyledons – Magnoliid, Hamamelid and Caryophyllid families. Springer, Berlin. 653 pp.
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