Uromyces auriculae (Magnus) Buchheim, 1924
No host plant alternation. Aecia mainly hypophyllous, dispersed over the entire leaf, dish-shaped, yellowish. Urediniospores and teliospores formed in common, soon naked sori dispersed over the leaf. Teliospores spores one-celled, ± globular, ø 26 – 49 µm, wall thickening towards the top; apically a conspicuous papilla; pedicel deciduous.
Primulaceae, narrowly monophagous
also on the many hybrids, but not on garden forms.
Brandenburger (1985a: 479), Gäumann (1959a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Termorshuizen & Swertz (2011a).