Anthracoidea capillaris on Carex capillaris (A–C, E, F) and C. boecheriana (D). A Habit (S. Frederiksen & L.B. Jørgensen, no. 68-1699, C-Greenland herb., s.n.) B, C spores in LM, in median and surface view, respectively (V. Dalgaard, no. 86-396, C-Greenland herb., s.n.) D–F spores in SEM (D 20 Jul 1926, leg. M.P. Porsild, s.n., C-Greenland herb., s.n.; E S. Frederiksen & L.B. Jørgensen, no. 68-1699, C-Greenland herb., s.n.; F 19 Jul 1939, leg. M.P. Porsild, s.n., C-Greenland herb., s.n.) G distribution map (red circles – on Carex capillaris; yellow circles – on C. boecheriana). Scale bars: 0.5 cm (A); 10 µm (B, C); 5 µm (D–F); 500 km (G).