GEOLOGICAL SURVEY OF THE TERRITORIES. 787 



Festuca microstachys, Nutt. — Plains near Ogdon, Utali, June. ♦ 



Bromus brcoiarisfatm, Thurber, (?) {Ceratochloa^ Hook.) — Marsh Val- 

 ley, Idaho, June; Teton Basin, July. 



Bromus ciliatm, L. — Upper CaQon of the Madison, August., 



Phragmites communis^ L. — Port Neuf Valley, Idaho, July. 



Triticum vepeus, L. — Port Neuf Caiiou, Idaho, July; Snake Iliver 

 Valley. It is known as "blue-joint," and is valuable for hay and graz- 

 ing. Found also in the Upper Geyser Basin, August. 



Triticum canlnum, L. — Upper Geyser Basin, August. 



Triticnm strigosum, Steud.. {Bromus, Bieb., T. (cgilopoidcs, Turcz.) — 

 Teton Ba>5in, July. 



Triticum glaucum, Desf. (?) — Port Xeuf Valley, Idaho, July; Snake 

 Eiver Valley. 



Rordeum pusilhim, Nutt. — Marsh Vallej", Idaho, July ; Snake Eiver 

 Valley; Teton foot-hills, August. 



Hordcum juhatum, L. — Ogden Canon, Utah, June ; Snake Eiver Val- 

 ley, July. 



Hordeum juhatum, L. var. — Peculiar to the Upper Geyser Basin. 



Elymiis mollis, Trin. — Henry's Fork of Snake Eiver, July. 



Elymus condensatus, Presl. — Fort Hall, Idaho, July; Teton Basin; 

 Snake Eiver Valley; Blackfoot Eiver. 



TJlymus Sitanio)i^ Schult., {Sifaniok elymoidcs, Eaf., and Polyantherix 

 Rystrix, Nees.) — Great Salt Lake, Utah, June; Henry's Lake, Idaho, 

 August; Lowe<i- Geyser Basin, September. 



Elymus ^ihiricus, L. — Henry's Fork of Snake Eiver, July; Upper 

 Geyser Basin, August. 



JDanthonia CaUfornica, Boland. — Henry's Fork of Snake Eiver, July; 

 Teton foot-hills, August. 



Trisetum sul'S2)icatum, Beaud. — Trail Eiver Mountains, elevation 

 10,000 feet, September. 



Trisetum suhsjyicatum, Beaud., var. muticum. — Teton Canon, July. 



Trisetum suhspicatum, Beaud., var. 'y^ioZfe, Uintah Mountains, Wyoming, 

 August, 1872. Dr. Joseph Leidy. 



Airajicxuosa, L. — Hot springs ten miles from Ogden, Utah, June. 



Aira cccspitosa, L. — Fire-Hole Eiver, August. 



Phalaris arundinacea, L. — Marsh Valley, Idaho, June ; Snake Eiver 

 Valley, Julj^; Upper Caiion of the Madison, August. "Known as 

 'crazy grass,' froui its reputed injurious effect upon horses." Watson. 



Panicum capiUare, L.— Yellowstone Lake, August; very common in 

 both Geyser Basins. 



EQUISETACEv^. 



Equisetum arrcnse, L. — Ogden Caiion, Utah, June. 

 Eqaisefum hyemale, L. — Henry's Fork of Saake Eiver, July. 

 Equisetum p>ratense, Ehr. — Henry's Fork of Snake Eiver, July. 

 Equisetum variegatum, Schleicher. — Lower Fire-Hole Basin, August. 

 Equisetum scirpoides, Michx. — Snake Eiver Valley, July. 



FILICES. 



Pteris aqulUna, L. — Shoshone Lake, September ; Upper Geyser 

 Basin, August. 



Pellcca Breweri, D. C. Eaton. — Mountains near Ogden, Utab, June ; 

 T6ton Eange, July. 



Pelkca dcHsa, Hook. — Jackson's Lake, September 23. 



