Hitchcock, A. S. 1920: The North American species of Ichnanthus. – Contr. U.S. Natl. Herb. 22: 1-12

Title	The North American species of Ichnanthus
Authorship	Hitchcock, A. S.
Date published	1920
Volume	22
In journal	Contr. U.S. Natl. Herb.
Pages	1-12