Anthracoidea nardinae on Carex nardina. A Habit (leg. Soejgaard, s.n., C-Greenland herb., s.n.) B, C spores in LM, in median and surface view, respectively (C-F-107989) D–F spores in SEM (D, F leg. M.P. Porsild, s.n., C-Greenland herb., s.n.; E leg. L. Koch, s.n., C-Greenland herb., s.n.) G distribution map (red circles – on Carex nardina; yellow circle – on C. nardina var. hepburnii). – Scale bars: 0.5 cm (A); 10 µm (B, C); 5 µm (D–F); 500 km (G).