@article {20249,
	title = {Studies of American plants - VI},
	journal = {Wrightia},
	volume = {5},
	year = {1974},
	month = {02/1974},
	pages = {23-44},
	chapter = {23},
	url = {http://www.biodiversitylibrary.org/item/15467$\#$page/29/mode/1up},
	author = {Lundell, Cyrus L.}
}
