Two unusual symptoms of cereal diseases caused by Ustilago nuda and Puccinia persistens var. triticina are described. U. nuda formed smut sori on barley leaf blades instead of ears. P. persistens developed uredia in a ring pattern on wheat leaves transferred to a glasshouse.
Benada J. (1990): Less common symptoms of cereal diseases by two parasitic fungi. – Česká Mykologie 44(4): 243.