@article {30272,
	title = {A contribution to the taxonomy of the Potentilla penysylvanica complex in North America},
	volume = {54},
	year = {1976},
	pages = {706-719},
	publisher = {Canadian Journal of Botany},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjb\&volume=54\&articleFile=b76-076.pdf},
	author = {Kohli, B. and Packer, J. G.}
}
