54 FLORA OF THE YELLOWSTONE NATIONAL PARK. 



Gilia gracilis, Hook. 



With the preceding, but less common. 



Gilia liniflora, Benth., var. pharnaceoides, Gray. 



Dry open places at low elevations. Rather common. 



Gilia nudicaulis, Gray. 



Moist meadows. Swan Lake, 7400 ft. alt. Rare. 



Gilia pungens, Benth. 



Rocky ridges, Tower Falls, 6400 ft. alt. ; Slides, Mt. Evarts, 7000 

 ft. alt. Rare. 



Gilia tenerrima, Gray. 



Dry banks. Soda Butte, 0800 ft. alt. Rare. 



Polemonium confertum, Gray. 



Alpine and subalpine rocky slopes. Common. 



Polemonium humile, Willd., var. pulchellum, Gray. 

 Dry slopes from 5500-8000 ft. alt. Frequent. 



Polemonium cseruleum, L. 



Bogs and wet meadows. Indian Creek, 7500 ft. alt. ; Alum Creek 

 (Forwood); Lower Geyser Basin (Coulter); Yellowstone Lake (Adams). 



Polemonium foliosissimum, Gray. 



Stevenson Island, Yellowstone Lake (Adams) ; Yellowstone Lake 

 (Coulter). 



HYDROPHYLLACEJE. 



Nemophila treviflora, Gray. 



Dry slopes. Soda Butte, 6700 ft. alt. 



Ellisia Nyotelea, L. 



Mammoth Hot Springs. 



Phacelia circinata, Jacq. F. 



Dry open places up to 8000 ft. alt. 



Phacelia Franklinii, Gray. 



Sepulchre Mt., 7500 ft. alt. ; Tower Falls, 6400 ft. alt. ; Yellowstone 

 Lake. Frequent. 



Phacelia sericea, Gray. 



Mammoth Hot Springs, 7000 ft. alt. ; Geode Creek, 7500 ft. alt. ; Red 

 Mt., 9600 ft. alt. (Coulter). 



Phacelia Menziesii, Torr. 

 Mud Springs (Adams). 



