40 FLORA OP THE YELLOWSTONE NATIONAL PARK. 



(Enothera breviflora, Torr and Gray (CE. Nattallii, Torr and Gray). 



Wet places. Swan Lake, 7400 ft. alt. ; Yellowstone (Parry, Forwood). 



(Enothera heterantha, Nutt. 



Swan Lake with the preceding, 7400 ft. alt. ; Blacktail Deer Creek, 

 7200 ft. alt. 



LOASACE^. 



Mentzelia dispersa, Wats. 



Dry banks up to 7500 ft. alt. Frequent. 



Mentzelia Isevicaulis, T. and G. 



Hot Sulphur Springs (Adams) ; Mammoth Hot Springs (W. H. Weed). 



UMBELLIFERJE. 



Carum Gairdneri, Benth. and Hook. 



Common in rather moist places, 0000-8500 ft. alt. 



Berula angustifolia, Koch. 

 Alum Creek (Forwood). 



Bupleurum ranunculoides, L. 

 Yellowstone (Parry). 



Osmorrhiza nuda, Torr. 



Rich, damp, open woods up to 9000 ft. alt. Common. 



Angelica pinnata, Wats. 



Bogs and banks of streams. Blacktail Deer Creek, 7300 ft. alt. ; 

 East Fork of the Yellowstone, 8000 ft. alt. Rather common. 



Angelica Lyallii, Wats. 



With the preceding, but rather less common. Upper Geyser Basin, 

 7300 ft. alt. 



Cymopterus alpinus, Gray. 



Upper Falls of the Yellowstone (Adams). 



Cymopterus montanus, Torr and Gray. 



Rocky hills. Gardiner, 5600 ft. alt. 



Peucedanum simplex, Nutt. 



Sepulchre Mt., 8000 ft. alt. 



Peucedanum ambiguum, Nutt. 



Rocky ridges and slides. Slough Creek, 8700 ft. alt. ; Mt. Norris, 

 9000 ft. alt. Frequent. 



