@book {20308,
	title = {The Silva of North America},
	volume = {7},
	year = {1895},
	publisher = {Houghton Mifflin and Company; The Riverside Press},
	organization = {Houghton Mifflin and Company; The Riverside Press},
	address = {Boston, New York; Cambridge},
	url = {http://www.biodiversitylibrary.org/item/54453$\#$page/7/mode/1up},
	author = {Sargent, Charles S.}
}
@book {20306,
	title = {The Bahama Flora},
	year = {1920},
	publisher = {published by the authors},
	organization = {published by the authors},
	address = {New York},
	url = {http://www.biodiversitylibrary.org/item/20679$\#$page/7/mode/1up},
	author = {Britton, Nathaniel L. and Millspaugh, Charles F.}
}
