52 FLORA OF THE YELLOWSTONE NATIONAL PARK. 



Ledum grandulosum, Nutt. 



Generally iu dense damp fir woods from 8000-9500 ft. alt. 



Chimaphila umbellata, Nutt. 



Soda Butte Creek, 8500 ft. alt. ; Yellowstone Lake (Adams). Rare. 



Moneses uniflora, Gray. 



Deep moist woods. Soda Butte Creek, 8500 ft. alt. ; East Pelican 

 Creek, 8600 ft. alt. ; Yellowstone Lake and Yellowstone Falls (Adams). 

 Not common. 



Pyrola secunda, L. 



Cache Creek, 7600 ft. alt. ; Mirror Lake, 8800 ft. alt. ; Fireliole 

 River (Coulter); Yellowstone Lake (Adams). Frequent. 



Pyrola chlorantha, Swartz. 



"Woods. Cache Creek, 8500 ft. alt. ; Yellowstone Lake (Adams). 

 Rare. 



Pyrola rotundifolia, L., var. uliginosa, Gray. 



Fir woods. Soda Butte Creek, 8000 ft. alt. ; Upper Falls of the 

 Yellowstone (Adams). 



Pyrola picta, Smith. 



Dry timbered slopes. Sulphur Hills, Pelican Creek, 9000 ft. alt. 

 Rare. 



Pterospora andromedea, Nutt. 



Under Pinus Murrayana. Yellowstone Lake ; along the Yellowstone 

 (Coulter); Upper Falls of the Yellowstone (Adams). Rather rare. 



Monotropa Hypopitys, L. 



Rather common in pine woods. 



PRIMULACE^. 



Sodecatheon IMLeadia, L. 



Bogs and wet slopes, from 0000-9000 ft. alt. 



Douglasia montana, Gray. 



Alpine summit of Mt. Holmes, 1000 ft. alt. 



Androsace septentrionalis, L. 



In wet open places, from 0000 ft. alt. to alpine. Rather common. 

 Swan Lake, 7400 ft. alt.; Mt. Wasliburne, 9800 ft. alt. ; YuUowstoue 

 Lake (Adams). 



