There are some striking differences in the leaves of Festuca and Lolium. One of the most essential in the species studied is the presence or absence of hairs and the involute character of the leaf of Festuca tenella.
Proceedings of the Iowa Academy of Sciences
©1896 Iowa Academy of Science, Inc.
"A Comparative Study of the Leaves of Lolium, Festuca, and Bromus,"
Proceedings of the Iowa Academy of Science, 4(1), 126-131.
Available at: https://scholarworks.uni.edu/pias/vol4/iss1/22