@book{286060,
	author = {Nowicke, Joan W., and Skvarla, John J.,},
	title = {Pollen morphology and phylogenetic relationships of the Berberidaceae /},
	publisher = {Smithsonian Institution Press,},
	year = {1981.},
	series = {Smithsonian contributions to botany ;},
	address = {City of Washington :},
	note = {Includes tables.},
	url = {https://purl.fdlp.gov/GPO/gpo114761}
}