22 c Canadian Arctic Expedition, 1913-18 



INDEX OF HOST PLANTS 



Alopecurus alpinus 



Clathrospora pentamera 

 Anemone parviflora 



Rhabdospora Drabae 



Mycosphaerella confinis 

 Arnica alpina 



Pleospora herharum 

 Artemisia hyperborea 



Mycosphaerella pachyasca 

 Artemisia Richardsoniana 



Pleospora vulgaris 

 Astragalus alpinus 



Mycosphaerella pachyasca 

 Calamagrostis purpurascens 



Diplodia Calamagrostidis 

 Campanula uniflora 



Pyrenophora chrysospora 

 Carex stans 



Schizonella melanogramma 

 Cassiope tetragona 



Mycosphaerella immersa 



Mycosphaerella inconspicua 

 Oerastium maximum 



Phoma Cerastii-maximi 

 Dodecatheon frigidum 



Mycosphaerella minor 



Pyrenophora comata 

 Draba alpina 



Leptostromella Drabae 

 Draba corymbosa 



Leptostromella Drabae 

 Draba nivalis 



Mycosphaerella pachyasca 



Pleospora Drabae 

 Dryas integrifolia 



Massarina Dryadis 

 Dupontia Fischeri 



Leptosphaeria Hierochloae 

 Elymus mollis 



Lophodermium arundinaceum 



Pleospora herbarum 

 Empetrum nigrum 



Metasphaeria sp. 



Physalospora Crepiniana 

 Epilobium latifolium 



Pleospora arctica 

 Erigeron compositus 



Mycosphaerella eriophila 



Pleospora vulgaris 



Pyrenophora sp. 



