@article {3279,
	title = {Variability, distribution and systematics of Pyrola picta s.l. (Ericaceae) in Western North America},
	journal = {Syst. Bot.},
	volume = {12},
	year = {1987},
	month = {1987///},
	pages = {324 - 335},
	author = {Haber, E.}
}
