34 FLORA OF THE YELLOWSTONE NATIONAL PARK. 



Hedysarum Mackenzii, Richard. 



Mammoth Hot Springs, 6200 ft. alt. ; Gardiner Falls ; gravelly banks 

 junction of Soda Butte Creek and East Fork of the Yellowstone, 

 6600 ft. alt. 



Hedysarum boreale, Nutt. 



Rather common in open pine woods, Sepulchre Mt., 8000 ft. alt. ; 

 Slough Creek, 6700 ft. alt. ; East Fork of Pelican Creek, 8400 ft. alt. 



ROSACEJE. 



Primus demissa, Walp. 

 Tower Falls. Rare. 



Spiraea betulifolia, Pallas. 



Open woods, not common. Mammoth Hot Springs, 6200 ft. alt. ; Hot 

 Sulphur Springs and Upper Falls of the Yellowstone (Adams) ; yellow- 

 stone (Parry). 



Spiraea betulifolia, Pallas, var. rosea, Gray. 

 Shoshone Lake (Coulter). 



Rubus Nutkanus, Moino. 



Rather rare in damp wooded slopes and ravines. Slough Creek, 8000 

 ft. alt. ; Cache Creek, 7800 ft. alt. 



Rubus strigosus, Michx. 



Blacktail Deer Creek, 7400 ft. alt. ; Obsidian Canon, 7600 ft. alt. ; 

 Heart Lake, 7500 ft. alt. ; Yellowstone Lake (Adams) . Rather local. 



Dryas octopetala, L. 



On bare alpine summits. Mt, Holmes, 10,100 ft. alt. ; Summits at 

 head of North Fork of Stinkingwater, 10,300 ft. alt. ; Slides, Soda Butte 

 Creek, 8200 ft. alt. 



Geum maorophyllum, Willd. 



Common in bogs and meadows at low elevations. Gardiner River, 

 5600 ft. alt. ; Tower Falls, 6300 ft. alt. 



Geum triflorum, Pursh. 



With the preceding, but more frequently on dry slopes and banks. 



Fragaria vesoa, L. 



Common in grassy places and open woods from 6000-8000 ft. alt. 

 Producing very little fruit. 



