Verbatim text: Freitag, H. 1975. The genus Piptatherum (Gramineae) in southwest Asia. Notes Roy. Bot. Gard. Edinburgh 42:355-489
Author: Freitag, H.
Year: 1975
Title: The genus Piptatherum (Gramineae) in southwest Asia
Journal: Notes Roy. Bot. Gard. Edinburgh
Volume: 42
Pages: 355–489