Standley: Rusts from Glacier National Park 145 



Melampsora confluens (Pers.) Jackson 

 II, III. On Salix Bebbiana perrostrata (Rydb.) Ball (15699), 5". subcaerulea 

 Piper (15111, 18805, 18460, 17366), S. monticola Bebb? (17686), and 5". Scou- 

 leriana Barr. (15971, 18736, 15969, 15606, 16680). 



Melampsora occidentalis Jackson 

 II, III. On Popuhis hastata Dode (18765). 



Melampsorella elatina (A. & S.) Arth. 

 II. On Cerastium strictum L. (15752) and C. beeringianum Cham. & 

 Schlecht. (17479)- 



Melampsoropsis Pyrojlae (DC.) Arth. 

 II. On Pyrola chlorantha Sw. (17924), P. secunda L. (16038), P. asarifolia 

 Michx. (15206), and Moneses uniflora (L.) Gray (15241). 



Phragmidium Andersoni Shear 

 On Potentilla fruticosa L. (17360). 



Phragmidium imitans Arth. 

 II, III. On Rubus strigosus Michx. (16085). 



Phragmidium Ivesiae Sydow 



II, III. On Potentilla Nuttallii Lehm. (15020, 17739)- I- On Potentilla 

 monspeliensis L. (15544a). 



Phragmidium occidentalis Arth. 



II, III. On Rubus parviflorus Nutt. (15196, 17928). 



Phragmidium Potentillae (Pers.) P. Karst. 

 On Potentilla pennsylvanica L. (17324, 17336). 



Phragmidium Rosae-acicularis Liro. 



I. On Rosa Bourgeauiana Crep. (15711). I, ii. On Rosa nutkana Presl 

 (14967). III. On Rosa gymnocarpa Nutt. (18862, 17923) and R. nutkana Presl 

 (18750). 



PUCCINIA ABERRANS Peck 



On Smelowskia americana Rydb. (16474, 15801). 



Puccinia abundans (Peck) Jackson 

 I. On Symphoricarpos albus (L.) Blake (15674). 



Puccinia Antirrhini D. & H. 

 Occurring abundantly at Lake McDonald on cultivated snapdragons. 



Puccinia arnicalis Peck 



III. On Arnica latifolia Bong. (15899). 



