52 FLORA OP THE YELLOWSTONE NATIONAL PARK. 



Ledum grandulosum, Nutt. 



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

 Not common. 



Pyrola secunda, L. 



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

 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 Murray/ana. Yellowstone Lake ; along the Yellowstone 

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



Monotropa Hypopitys, L. 



Rather common in pine woods. 



PRIMULACE^J. 



Dodeoatheon Meadia, L. 



Bogs and wet slopes, from 6000-9000 ft. alt. 



Douglasia montana, Gray. 



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



Androsace septentrionalis, L. 



In wet open places, from 6000 ft. alt. to alpine. Rather common. 

 Swan Lake, 7400 ft. alt. ; Mt. Washbiirne, 9800 ft. alt. ; Yellowstone 

 Lake (Adams). 



