@article {4451,
	title = {A new Spleenwort from China},
	journal = {Contributions from the United States National Herb},
	volume = {12},
	year = {1909},
	author = {W.R.Maxon.}
}
@article {4400,
	title = {Aspleniaceae},
	journal = {Bulletin de l{\textquoteright}Acad{\'e}mie Internationale de G{\'e}ographie Botanique},
	volume = {20},
	year = {1909},
	author = {H.Christ}
}
