@article {16069,
	title = {Acer[Section Integrifolia Pax]for Southeastern China},
	journal = {Lingnan Science Journal},
	volume = {11},
	year = {1932},
	author = {Franklin P.Metcalf}
}
@article {16063,
	title = {Additional Notes on Acer},
	journal = {Lingnan Science Journal},
	volume = {20},
	year = {1942},
	author = {Franklin P.Metcalf}
}
