Verbatim text: Foster, R. C. 1937. A cytotaxonomic survey of the North American species of Iris. Contr. Gray Herb. 119: 3–79.
Author: Foster, R.C.
Year: 1937
Title: A cytotaxonomic survey of the North American species of Iris
Journal: Contr. Gray Herb
Volume: 119
Pages: 3–79