Microbotryum stellariae on Stellaria calycantha. A Habit (J. Feilberg, no. G.B.U. 5570, C-Greenland herb., s.n.) B, C spores in LM, in median and surface view, respectively (J. Feilberg, no. G.B.U. 5570, C-Greenland herb., s.n.) D–F spores in SEM (D, F J. Feilberg, no. G.B.U. 5570, C-Greenland herb., s.n.; E H. Andersen & J. Feilberg, no. G.B.U. 4424, C-Greenland herb., s.n.) G distribution map (red circle – on Stellaria borealis subsp. borealis; yellow circles – on S. calycantha; blue circle – on S. crassipes). Scale bars: 0.5 cm (A); 10 µm (B, C); 5 µm (D–F); 500 km (G).