Spies, J. J., S. K. Spies, S. M. C. v. Wyk, A. F. Malan & E. J. L. Liebenberg. 1996. Cytogenetic studies in some representatives of the subfamily Pooideae (Poaceae) in South Africa. 2. The tribe Aveneae, subtribes Phalaridinae and Alopecurinae. Bothalia 26(1): 63–67.