62 BULLETIN UNIVERSITY OF MONTANA 



Cystopus candidus (Pers.) Lev. On Cardamine hirsuta. McDonald Lake 

 in the Mission Mountains. 



Dimerosporium Collinsii (Schew.) Thum. On Amelanchier alnifolia at 

 Bigfork. Tliis is very abundant and seems to be affecting the fruit trees 

 very injuriously. 



Doassansia Sagittariae (West) Fisch. On Sagittaria arifolia at Swan 

 Lake. 



Doassansia Alismatis (Nees) Corn. On Alisma Plantago at Swan Lake. 



Dothidea Pteridis, Phyllachora, Cryptomyces, all stages of the same fun- 

 gus. On Pteris aquilina. Bigfork (Bonser). Probably the same as Uredin- 

 opsis Pteridis Diet. & Holway which I also got at the foot of MacDougal 

 Peak on the same host. 



Erineum. This was once supposed to be a fungus but now is regarded 

 as a disease caused by mites. On Acer glabrum at Bigfork. Common. 



Erysiphe Polygoni DC. On Polygonum aviculare at Wild Horse Island. 



Erysiphe Polygoni var. On Lupinus at Bigfork( Bonser). 



Gymnosporangium Nelsoni Arthur. On Amelanchier alnifolia at Yellow 

 Bay. 



Hydnum. The coral fungus. This was scarce but very beautiful. Poison. 



Linospora Brunellae E. &. E. OnBrunella vulgaris at Swan Lake. 



Marsssonsia Potentillae (Desm.) Fisch. On Potentilla on Nigger Prairie 

 Trail. Bonser. 



Melampsora Medusae Thum. This is the same as Uredo Medusae (Thum.) 

 Arthur. On Populus trichocarpa at Bigfork by Bonsor, and by myself on 

 Populus tremuloides at Bigfork. 



Melampsora Bigelovii. On Salix at Bigfork by Bonser. 



Melampsoridium Betulae (Schum.) Arthur. On Betula glandulosa at Mac- 

 Dougal Peak. Also on B. alba at Dayton. 



Melampsoropsis Pyrolae (D.C.) Arfthur. ,0n Pyrola rotundifolia at Bigfork. 

 This is probably the same ac Chrysomixa reported above by Bonser. 



Microsphaeria AIni (Wallr.) On Vicia Americana at Bigfork by Bonser. 



Microsphaeria AIni var. ludens. Salm. On Vicia Americana at Big Arm. 



Microsphaeria AIni var. divaricata. On Ceanothus sangunieus at Bigfork 

 by Bonser. 



Microsphaeria diffusa C. & P. On Symphoricarpos racemosus at Bigfork. 

 Also on the same host and locality by Bonser. 



Peridermium Balsameum Peck. On Abies grandis at Swan Lake and Mac- 

 Dougal Peak and Yellow Bay. 



Peridermium pseudo-balsameum (Holway). On Abies grandis at Bigfork 

 by Bonser. 



Peridermium ornamentale Arthur. On Abies lasiocarpa at MacDougal 

 Peak, alpine. 



Peridermium Pini. On Pinus ponderosa at Bigfork by Bonser. 



Phragmidium affine Sydow. On Potentilla flabelliformis at Monida. 



Phragmidium occidentale Arthur. On Rubus Nutkana at MacDougal Peak 

 and Bigfork. 



Phragmidium "tuberculatum." On Rosa at Bigfork by Bonser. 



Phragmidium montivagum Arth. On Rosa gymnocarpa at Bigfork. 



Phoma Lupini. On Lupinus on the MacDougal Peak trail, Bonser. 



Phoma. On Arctostaphylos Uva-Ursi at Bigfork by Bonser. 



Phyllosticta Angelicae Sacc. On Angelica Lyallii at Swan Lake. 



Phyllosticta Arnicae Fckl. On Arnica cordifolia. Evaro. 



Physoderma vagans Schroet. On Slum cicutaefolium at Blgtork. 



Podosphaeria oxyacanthae (DC.) DeBary. On Prunus demissa. Ravalli. 



Polythelis Thalictri (Chev.) Arthur. This is the same as Puccinia Tha- 

 lictri Chev. On Thalictrum occidentale on slopes of MacDougal Peak. 



Puccinia Absinthii (DC.) On Artemisia Dudoviciana at Poison by Bonser. 



Puccinia acuminata Pp. On Cornus Canadensis on Swan river (Bonser). 



