@article {545,
	title = {Contributions from the Gray Herbarium of Harvard University},
	volume = {54},
	year = {1918},
	author = {S. F. Blake}
}
@article {383,
	title = {Proceedings of the Biological Society of Washington},
	volume = {36},
	year = {1923},
	author = {S. F. Blake}
}
@article {384,
	title = {Proceedings of the Biological Society of Washington},
	volume = {38},
	year = {1925},
	author = {S. F. Blake}
}
@article {165,
	title = {Contr. U.S. Natl. Herb.},
	volume = {26},
	year = {1930},
	author = {S. F. Blake}
}
@article {159,
	title = {Contr. Gray Herb.},
	volume = {52},
	year = {1917},
	author = {S. F. Blake}
}
