FLORA OF THE YELLOWSTONE NATIONAL PARK. 51 



Taraxacum officinale, Weber, var. scopulorum, Gray. 

 Slides, Soda Butte Creek, 8600 ft. alt. Rare. 



Lactuca pulchella, DC. 



Mammoth Hot Springs, 6200 ft. alt.; Yellowstone Lake, 7800 ft. alt.; 

 Alum Creek (Forwaid). Frequent. 



LOBELIACEJE. 



Laurentia carnosula, Benth. 



Muddy shore of Yellowstone Lake (Adams). 



CAMPANULACE^I. 

 Campanula rotundifolia, L. 



Grassy places. Very common from 6000-9000 ft. alt. 



ERICACEAE. 



Vaccinium myrtilloides, Hook. 



Damp woods. Pelican Creek, 8400 ft. alt. Rare. 



Vaccinium occidentale, Gray. 



Wooded bogs head of the Gibbon River, 8000 ft. alt. (2-3 feet in 

 height). Rare. 



Vaccinium caespitosum, Miclix. 

 Shoshone Lake (Coulter). 



Vaccinium Myrtillus, L., var. microphyllum, Hook. 



Dense and sparsely wooded slopes and plateaus, from 7500-9000 ft. 

 alt. Extremely common. Frequently the only vegetation in dense 

 pine woods. Berries always light red. 



Arctostaphylos Uva-ursi, Spreng. 



Common in dry rocky places, especially over hot spring and geyser 

 areas. 



Gaultheria Myrsinites, Hook. 



Mossy, damp woods. Gibbon Lakes, 8000 ft. alt. ; Broad Creek, 

 8500 ft. alt. 



Bryanthus empetriformis, Gray. 



Subalpine wet slopes on the borders of timber. Rather common. 



Kalmia glauca, Ait. 



Bogs. Sour Creek, 8600 ft. alt., 2-6 inches high (var. microphylla, 

 Hook). "Shoshone Lake on geyserite " (Coulter). Not common. 



