FLORA OF THE YELLOWSTONE NATIONAL PARK. 39 



ONAGRACEJE. 



Epilobium spicatum, Lam. 



Dry places, principally on the burnt areas. Mamraotli Hot Springs, 

 6300 ft. alt..; Mirror Lake Plateau, 8800 ft. alt.; Alum Creek (Forwood); 

 Mud Springs (Adams). 



Epilobium latifolium, L. 



Dry washes along Sod;i Butte Creek, 7700 ft, alt. Not common. 



Epilobium suffruticosum, Nutt. 



With the former, Yellowstone Lake and Upper Falls of the Yellow- 

 stone (Adams). 



Epilobium alpinum, L. 



Rather common on subalpine mountain slopes. 



Epilobium coloratura, Muhl. 



Alum Creek (Forwood); Mud Springs (Adams). 



Epilobium Drummondii, Hausknecht {E. oritjanifolinm, Lam.). 



"Hausknecht does not allow U. origani folium, Lam,, to be Ameri- 

 can" (Watson). Coal bogs and mountain streams, 7500-9500 ft. alt. 



Epilobium Hornemanni, Reich, (a form of E. orkjanifoliuni, Lam.). 

 With the preceding. 



Epilobium paniculatum, Nutt. 



Dry, open grassy slopes. Soda Butte, 7000 ft. alt. 



Gayophytum ramosissimum, Torr and Oray. 



Very common on dry banks up to 8000 ft. alt, 



Gayophytum racemosum, Torr and Gray, 

 With the preceding. 



(Enothera biennis, L. 



Hot Sulphur Springs and Yellowstone Lake (Adams). 



(Enothera albicaulis, Nutt. 

 Mud Springs (Adams). 



(Enothera caespitosa, Nutt. 



Dry rocky i^laces. Mammoth Hot Springs, 0400 ft, alt. Rare. 



(Enothera triloba, Nutt, 



Yellowstone Lake (Coulter). 



(Enothera brachycarpa, Gray {CE. marginata, \&r. purpurea). 



Hot Sulphur Sijrings (Adams) ; Hot Springs along the Yellowstone 

 (Coulter). 



