H. G. SIMMONS. [2nd arc. EXP. FRAM 



latifoliuni, Potentilla rubricauUs and nivea, Saxifraga aizoides, 

 cernua, groenlandica, hirculus and nivalis, Draba nivalis and fladni- 

 zcnsis, Papaver radicatum, Ranunculus sulphureus and afftnis, 

 Melandryum affine, Stellaria langipes, Alsine verna, Polygonum 

 viviparuin, Oxyria digyna. These hosts, which are attacked by 

 Pleospora herbarum, are all found in various parts of EUesmere Land, 

 with the exception of Potentilla nivea and Polygonum viviparum, 

 wich are from Foulke Fjord in Greenland. 



Pleospora, Drabae Schroet. 

 Draba alpina: E. Bedford Pirn Island. 



Pleospora vulgaris Niessl. 



Pedicularis hirsuta: G. Egedesminde. — Potentilla emarginata: 

 E. Skrgellingo. 



Gystopteris fragilis: E. Havne Fjord. — Lycopodium Selago: 

 E. Bedford Pirn Island. 



Pleospora pentamera Karst. 

 Frequent upon various monocotyledons, in many places on Files- 

 mere Land : Luzula confusa and arcuata, Carex nardina and stans, 

 Arctagrostis latifolia, Aira ccespitosa var. ardica, Trisetum subspi- 

 catum, Poa abbreviata, glauca and cenisea. 



Pleospora platyspora Sacc. 

 Bray a purpurascens : E. Havne Fjord. 



Pleospora infectoria Fuckel. 

 Catabrosa algida: E. Havne Fjord. 



Pyrenophora comata (Niessl) 

 Potentilla pulchella: E. Gaase Fjord. — Arenaria ciliata: E. 

 Havne Fjord. — Oxyria digyna: E. Fram's Haven. 



Leptosphseria Silenes Not. 

 Silene acaulis. E. Havne Fjord. 



Leptosphseria wicroscopica Karst. 

 Stalks of Eriophormn polystachyum : E. 0redalen, Havne Fjord. 



Leptosphseria epicarecta Cooke. 

 Carex stans: E. Fram's Haven, Lastrseadalen. 



Chaetosphaeria byssiseda Rostr. 

 Potentilla emarginata: E. Gaase Fjord. 



