@booklet {208,
	title = {Das Pflanzenreich IV.23B. Araceae-Pothoideae},
	volume = {Heft 21},
	year = {1905},
	publisher = {W. Engelmann},
	abstract = {1-330},
	author = {Engler, Heinrich Gustav Adolf}
}
@booklet {125,
	title = {World Checklist of Selected Plant Families},
	year = {2008},
	author = {"Royal Botanic Gardens, Kew"}
}
