The document lists various plant rust fungi and their causes. It mentions Uromyces fabae which causes broad bean rust, Puccinia graminis tritici which causes wheat stem rust, and Phragmidium mucronatum found infecting roses in Poland and willows in Latvia. It also lists Tranzschelia pruni-spinosae which causes rust on rose hips and Melampsora lini as the cause of flax rust. Finally, it discusses Puccinia allii, the causal agent of onion rust.