@book {bhlpg47020936,
	title = {Smithsonian contributions to botany.},
	volume = {no.98 (2012)},
	year = {1969},
	pages = {Page 598},
	publisher = {Smithsonian Institution Press;},
	organization = {Smithsonian Institution Press;},
	url = {http://www.biodiversitylibrary.org/page/47020936},
	author = {Smithsonian Institution.}
}
