Before the work of Liro, there was thought to be but one clover rust. He proved the rust on white clover to be autoecious and it was classified as Uromyces trifolii-repentis (Cast) Liro. It has been shown that the rust on red clover is also autoecious, having all four stages on red clover, and it is generally classified as Uromyces trifolii (Hedw. f.) Liro. The rust on alsike clover is autoecious, having all the stages, and was classified as Uromyces Hybridi, Davis, in Vol. XXIV, Iowa Academy of Science, 1917.
Proceedings of the Iowa Academy of Science
©1919 Iowa Academy of Science, Inc.
Davis, W. H.
"Mammoth Clover Rust,"
Proceedings of the Iowa Academy of Science, 26(1), 249-258.
Available at: https://scholarworks.uni.edu/pias/vol26/iss1/24