Microbotryum vinosum on Oxyria digyna. A Habit (B. Fredskild, no. 5113, C-Greenland herb., s.n.) B, C spores in LM, in median and surface view, respectively (M. Møller et al., no. 261, C-Greenland herb., s.n.) D–F spores in SEM (B. Fredskild, no. 5113, 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).