GEOLOGICAL SURVEY OF THE TEREITOEIES. 771 



Achillea MillefoUum, L. — Near Ogden, Utah, May 30 ; very abundant 

 everywhere ou the route. 



Matricaria disGoidea, D. C. — Great Salt Lake, June 17. 



Artemisia dracunculoides^ Pursh. — Snake Kiver Valley, October; Yel- 

 lowstone Kiver, August 23. 



Artemisia tridentata, Nutt. — Yellowstone Lake, August 23; Snake 

 River Valley, July. The common form all over the West. 



Artemisia discolor, Dougl. — Snake River Valley, October; Lower 

 Fire-Hole Basin, August. 



Artemisia Ludoviciana, Xutt. — Weber River, Utah, June. 



Artemisia Lndoviciana, Nutt., var. Bouglasiana, D. C Eaton. (A. 

 Bonglasiana, T. and G.) — Yellowstone Lake, August ; Market Lake, 

 Idaho, July. 



Artemisia Ludoviciana, iSTutt., var. latifoUa, T. and G. — Yellowstone 

 Lake, Angust 5 ; Port Neuf Canon, Idaho, July. 



Artemisia cana, Pursh. — Yellowstone Lake, August. 



Artemisia frif/ida^ Nutt. — Near Fort Bridger, Wyoming, August, Dr. 

 Joseph Leidy. 



Gnaplialium luteo album, L., var. Sprengeliij D. C. Eaton. — White 

 Mountain Hot Springs, Montana, elevation 6,400 feet, July ; Geyser 

 Basin on Shoshone Lake, September. 



GnaphaUum palustre, Nutt. — Great Salt Lake, June. 



Gnaphalium microcephalnm, Nutt. — Shoshone Lake, September. 



Antennaria margaritacea, R. Br. — Henry's Lake, Idaho, August 8. 



Antennaria Carpathica, R. Br. — Shoshone Lake, September 6. 



Antennaria, Carpathica, R. ^v.,\aiL. pulcherrima, Hook. — Henry's Lake, 

 Idaho, August 8; Lower Fire- Hole Basin, September; Teton Basin, 

 July 21. 



Antennaria aJx>ina, Giertn. — Ogden Caiion, Utah, June 15 ; Fort Hall, 

 Idaho, July ; Upper Geyser Basin, August. 



Antennaria dioica, Giiertn. — Yellowstone River, August 22 ; Snake 

 River Valley, July 30. 



Antennaria dioica, GiBrtn., var. rosea, D. C. Eaton. — Teton Basin, July 

 21. 



Antennaria racemosa, Hook. — Mountains near Henry's Lake, Idaho, 

 August 9. 



Arnica longifoUa, D. C. Eaton. — Grand Canon of the Yellowstone, 

 August 22. 



Arnica augustifolia, Vahl. — Divide between Marsh and Malade Valleys, 

 June 29. 



Artiica Chamissonis, Less. — Divide between Marsh and Malade Val- 

 leys, June 29 ; swamps along Henry's Fork of Snake River, August. 



Arnica latifolia, Bongard. — Teton Mountains, elevation 10,000 feet, 

 July. 



Arnica cordifolia, Hook. — Ogden Caiion, Utah, June; Teton Basin, 

 July; Trail River fountains, September. 



Senecio lugens, Richards. — Teton Mountains, elevation 10,000 feet, 

 July; Yellowstone Lake, August. 



Senecio lugens, Richards, var. Hoolceri, D. C. Eaton. — Mountains near 

 Henry's Lake, Idaho, August. 



Senecio lugens, Richards, var. exaltatus, D. C. Eaton. — Lower Fire- 

 Hole Basin, August; Mountains near Ogden, Utah, June. 



Senecio hydrophilus, Nutt. — Henry's Lake, Idaho, August. 



Senecio triangularis, Hook. — Henry's Fork of Snake river, August; 

 Yellowstone Lake; Red Mountain, elevation 10,000 feet, September; 

 Teton River. 



