@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.}
}
@article {2977,
	title = {Pollen morphology and its taxonomic significance of the Monotropoideae (Ericaceae)},
	journal = {Bot. Mag. (Tokyo)},
	volume = {100},
	year = {1987},
	month = {1987///},
	pages = {385 - 405},
	author = {Takahashi, H.}
}
@article {2950,
	title = {Transfer of Eremotropa sciaphila to Monotropastrum (Ericaceae, Monotropoideae)},
	journal = {Taxon},
	volume = {36},
	year = {1987},
	month = {1987///},
	pages = {128 - 130},
	author = {Wallace, G. D.}
}
