@article {3060,
	title = {The morphology of the fungal associations of three species of Corallorhiza in Michigan},
	journal = {Michigan Bot.},
	volume = {9},
	year = {1970},
	month = {1970///},
	pages = {108 - 113},
	author = {Campbell, E. O.}
}
@article {2922,
	title = {Notes on the fungal association of two Monotropa species in Michigan},
	journal = {Michigan Bot.},
	volume = {10},
	year = {1971},
	month = {1971///},
	pages = {63 - 67},
	author = {Campbell, E. O.}
}
