Verbatim text: Blake, S. F. 1921. Revision of the genus Acanthospermum. Contr. U.S. Natl. Herb. 20: 383–392.
Author: Blake, S.F.
Year: 1921
Title: Revision of the genus Acanthospermum
Journal: Contr. U.S. Natl. Herb
Volume: 20
Pages: 383–392