@booklet {218,
	title = {Revision of Philodendron subgenus Pteromischum (Araceae) for Pacific and Caribbean Tropical America. Systematic Botany Monographs.},
	volume = {47},
	year = {1996},
	abstract = {1-233},
	author = {Grayum, Michael Howard}
}
@booklet {219,
	title = {Philodendron Subgenus Pteromischum (Araceae) from Sa{\"u}l, French Guiana. Novon},
	volume = {4},
	year = {1994},
	abstract = {<p>211-219.</p>
},
	author = {Grayum, Thomas Bernard Croat and Michael Howard}
}
