References
Wen, J., P.P. Lowry II, J.L. Walck, and K.-O. Yoo. 2002. Phylogenetic and biogeographic diversification in Osmorhiza (Apiaceae). Ann. Missouri Bot. Gard. 89: 414–428. Google Scholar
Wen, J., P.P. Lowry II, J.L. Walck, and K.-O. Yoo. 2002. Phylogenetic and biogeographic diversification in Osmorhiza (Apiaceae). Ann. Missouri Bot. Gard. 89: 414–428. Google Scholar