Literature

Authors	Year	Title
M. E. Barkworth	1990	Nassella (Gramineae, Stipeae): Revised interpretation and nomenclatural changes
M. E. Barkworth	1983	Ptilagrostis in North America and its relationship to other Stipeae (Gramineae)
M. E. Barkworth, Atkins R. J.	1984	Leymus Hochst. (Gramineae: Triticeae) in North America: Taxonomy and Distribution
Jacobs, S. W. L., Everett, J., Barkworth, M. E., Hsiao, C.	2000	Relationships within the Stipoid Grasses (Gramineae)

1990

1983

1984