FLORA OF THE YELLOWSTONE NATIONAL PARK. 2*7 



Draba nemorosa, L. 



Mammoth Hot Springs ; Slough Creek, 1800 ft. alt. Frequent. 



Draba nemorosa, L., var. leiocarpa, Lindb. 



Yellowstone Lake and Upper Falls of the Yellowstone (Adams). 



Draba nemorosa, L., var. hebecarpa, Lindb. 



Cache Creek, 7900 ft. alt. ; Swan Lake, 7400 ft. alt. 



Draba aurea, Vahl. 



Soda Butte Creek, 7400 ft. alt. Rare. 



Cardamine cordifolia, Gray. 



Bogs. Indian Creek, 8000 ft. alt. 



Cardamine Breweri, Watson. 



Upper Falls of the Yellowstone (Adams). 



Cardamine hirsuta, L. 



Yellowstone Lake (Coulter) ; Mirror Lake Plateau, 9000 ft. alt. 

 Small forms, 2-4 inches high. 



Arabis perfoliata, Lam. 



Gardiner River, 5500 ft. alt. ; Slough Creek, 6800 ft. alt. Infrequent. 

 Arabis hirsuta, Scop. 



Mammoth Hot Springs, 6300 ft. alt. ; Gardiner River, 5400 ft. alt. 

 Frequent. 



Arabis spathulata, Nutt. 



Grassy hills. Fawn Creek, 8000 ft. alt. Rare. 



Arabis Drummondii, Gray. 



Mt. Washburne, 8400 ft. alt. ; Stinkingwater Pass (Parry) ; Yellow- 

 stone Lake (Adams). 



Arabis Lyallii, Watson. 



Mt. Washbunie, 9800 ft. alt. ; Rocks, Slough Creek, 7000 ft. alt. ; 

 Mt. Doane (Adams). 



Arabis Holboellii, Hornem. 



Gardiner River, 56CO ft. alt. ; Shoshone Lake (Coulter). Not 

 common. 



Thelypodium integrifolium, Endl. 



Mammoth Hot Springs, 6200 ft. alt. ; Hot Sulphur Springs (Adams). 



