@article {35682,
	title = {J. Arnold Arbor. 12: 189, 1931},
	year = {Submitted}
}
@article {35683,
	title = {Ill. Handb. Laubholzk. 2: 73, 1907},
	year = {Submitted}
}
@article {35684,
	title = {Bull. New York Bot. Gard. 6: 394, 1910},
	year = {Submitted}
}
@article {35685,
	title = {Bull. Torrey Bot. Club 21: 17, pl.171, 1864},
	year = {Submitted}
}
@article {35675,
	title = {J. Arnold Arbor. 12: 171, 1931},
	year = {Submitted}
}
@article {35676,
	title = {Rhodora 38(449): 191, 1936},
	year = {Submitted}
}
@article {35677,
	title = {N. Amer. Fl. 24: 33, 1919},
	year = {Submitted}
}
@article {35678,
	title = {Amer. J. Sci. Arts 25: 74, 1834},
	year = {Submitted}
}
@article {35679,
	title = {Dendrol. Brit.  pl. 139, 1825},
	year = {Submitted}
}
@article {35680,
	title = {N. Amer. Fl. 24: 30, 1919},
	year = {Submitted}
}
@article {35681,
	title = {Flora 21: 750, 1838},
	year = {Submitted}
}
@article {26289,
	title = {Fl. Amer. Sept. (Pursh) 0: 467, 1814},
	year = {Submitted}
}
@article {26290,
	title = {Sp. Pl.  713, 1753},
	year = {Submitted}
}
