36 FLORA OF THE YELLOWSTONE NATIONAL PARK. 



Rosa Sayi, Schwein. 



Wooded and open rocky places. Slough Creek, 6600 ft. alt.; Cache 

 Creek, 7900 ft. alt.; Alum and Sour Creeks, 7700 ft. alt.; Yellowstone 

 Lake, 7800 ft. alt. Common. 



Rosa Arkansana, Porter. 



Open woods, Mammoth Hot Springs, G200 ft. alt.; Thickets, Soda 

 Butte Creek, 7800 ft. alt. lather rare. 



Pyrus sambucifolia, Cham and Schlecht. 



Sulphur Hills, Pelican Creek, 8200 ft. alt.; Gibbon Lakes, 8000 ft. alt.; 

 Rare. 



Amelanchier alnifolia, Nutt. 



Open rocky places up to 7500 ft. alt. Bison Peak, 6800 ft. alt.; East 

 Fork of the Yellowstone, 7400 ft. alt.; Yellowstone Lake (Coulter). 

 Not common. 



SAXIPRAGACEJE. 



Saxifraga oppositifolia, L. 



High alpine. Mt. Holmes, 10,100 ft. alt.; Mt. Washbuine, 10,000 ft. 

 alt. Mountains along Yellowstone Lake (Adams). 



Saxifraga caespitosa, L. 



Rocky, wet alpine slopes, near snow, North Fork of Stinkingwater, 

 10,200 ft. alt. 



Saxifraga bronchialis, L. 



Rocky knolls along Slough Creek, 6700 ft. alt; Yellowstone Lake 

 (Adams) ; Gallatin Range (W. H. Weed). 



Saxifraga rivularis, L. 



With S. ccBspitosa, L. 



Saxifraga punctata, L. 



Bogs and wooded mountain streams. Common. Indian Creek, 8000 

 ft. alt.; Slough Creek, 7700 It. alt.; Pelican Creek, 8200 ft. alt.; Yellow- 

 stone River (Coulter); Hot Sulphur Springs and Yellowstone Falls 

 (Adams). ( 



Saxifraga Jamesii, Torr. 



Hot Sulphur Springs (Adams); National Park (Coulter's Bot. of the 

 R;jcky Mts.) ; Gallatin Range (W. H, Weed). 



Saxifraga nivalis, L. 



Wet slopes from 7500-9500 ft. alt.; Sepulchre Mt., 8000 ft. alt.; Mt. 

 Washburuc, 9300 ft. alt. 



