@book{8662,
	author = {Pennell, Francis W.},
	title = {Scrophulariaceae of the central Rocky mountain states,},
	publisher = {Govt. print. off.,},
	year = {1920.},
	series = {Smithsonian institution. United States National museum.  Contribuitons from the United States National herbarium.},
	address = {Washington,},
	note = {Also considered as Contribution from the New York botanical garden, no. 219.}
}