@article {6892, title = {Phylogeny of eastern North American Coreopsis (Asteraceae-Coreopsideae): insights from nuclear and plastid sequences, and comments on character evolution}, journal = {Amer. J. Bot}, volume = {92}, year = {2005}, month = {2005///}, pages = {330 - 336}, author = {D.J. Crawford and M.E. Mort} }