Urocystis fischeri on Carex bigelowii (T. Sørensen, no. 3137, C-Greenland herb., s.n.). A Habit B, C spore balls in LM D–F spore balls in SEM G distribution map. Scale bars: 0.5 cm (A); 10 µm (B, C); 5 µm (D–F); 500 km (G).