32 FLORA OF THE YELLOWSTONE NATIONAL PARK. 



Lupinus sericeus, Pursh. 



Common throughout : Mammoth Hot Springs, 6000 ft. alt. ; Black tail 

 Deer Creek, 7300 ft. alt. ; Mt. Washburne, 9800 ft. alt. ; Mt. Holmes, 

 10,000 ft. alt. 



Lupinus argenteus, Pursh., var. decumbens, Wats. 



With the preceding, but more frequent in meadows from 8500-9500 ft. 

 alt. ; Mammoth Hot Springs, 5900 ft. alt. ; Mirror Lake Plateau, 8800 

 ft. alt. ; Mud Springs and Yellowstone Lake (L. laxiflorus, Dougl., var. 

 tenellus, T. and G.), Adams. 



Lupinus Burkei, Watson. 



Border of woods, Turbid Lake, 8000 ft. alt. Open pine woods, 

 Mirror Lake Plateau, 8600 ft. alt. ; Upper Falls of the Yellowstone (L. 

 polyphyllus, Lindl.), Adams. 



Lupinus pusillus, Pursh. 



Mouth of Gardiner River, 5300 ft. alt. Rare within the Park. 



Trifolium longipes, Nutt. 



Very common in bogs and meadows from 6000-8500 ft. alt. 



Trifolium Kingii, Watson ( T. Haydeni, Porter). 



Subalpine wet slopes. Mt. Holmes, 9GOO ft. alt. 



Trifolium Parryi, Gray. 

 With the preceding. 



Astragalus caryocarpus, Ker. 



Mammoth Hot Springs, 5800 ft. alt. Rare. 



Astragalus Canadensis, L. 



Blacktail Deer Creek, 7200 ft. alt. ; Mammoth Hot Springs, 6200 ft. 

 alt. Rare. 



Astragalus hypoglottis, L. 



Grassy places, Common in the no: them portion of the Park. 



Astragalus Drummondii, Dougl. 



. Mammoth Hot Springs, 6200 ft. alt. ; Sepulchre Mt,, 8000 ft. alt. ; 

 Cache Creek, 7600 ft. alt. ; Gardiner River, 5700 ft. alt. Frequent. 



Astragalus aboriginum, Rich. 



Mt. Washburne, 10,000 ft. alt. ; hills along Soda Butte Creek, 8000 

 ft. alt. Rare. 



Astragalus oroboides, Hornera., var. Americanus, Gray. 



Blacktail Deer Creek, 7300 ft. alt. ; Slough Creek, 6600 ft. alt. 



