Urocystis sorosporioides on Thalictrum alpinum. A Habit (C-F-111318) B, C spore balls in LM (C-F-111318) D–F spore balls in SEM (leg. J. Just, s.n., C-Greenland herb., s.n.) G distribution map. Scale bars: 0.5 cm (A); 10 µm (B, C); 5 µm (D–F); 500 km (G).