496 GEOLOGICAL SUEVEY OF THE TEKEITOEIES, 



Scirpus validtis, Vahl. — Crow Agency. 



Scirpus atrovirens, Muhl. — Fort Ellis to the Yellowstone. 



Carex Hallii, Olney, iued. — " It is the same as Hall and Harbour's 

 617, named by Booth G. Parryana. but quite unlike all the arctic speci- 

 mens I have seen of tbat species. To the eye it resembles G. scirpoidea, 

 when the latter has a second small spike, but differs in having a shorter, 

 more obovate, smooth, many-nerved perigynium, and more entire scales, 

 not ciliated. I propose that it should bear the name of Mr. Elihu Hall, 

 of Athens, Illinois, its first collector." —Pleasant Valley. 



Garex valUcola, Dew. — Pleasant Valley. — " All I have seen of this has 

 been of Hayden's collection." — Olney. 



Garex siccata, Dew. — Pleasant Valley ; Mud Springs. 



Garex JDouglassii, Boott. — Mountains south of Virginia City. 



Garex Bonplandii, Kunth, (°?) var. minor, Boott. — Falls of the Yellow- 

 stone. 



Garex /estiva, Dew. — Fort Ellis to the Yellowstone ; Mud Springs ; 

 Yellowstone Lake. 



Garex aquaiilis, Wahl. — Pleasant Valley ; Upper Falls of the Yellow- 

 stone. 



Garex aquatilis, Wahl., var. minor, Boott. — Yellowstone Lake; Upper 

 Fa.lls of the Yellowstone. — The perigynia have denticulated margins, a 

 character which may carry this plant elsewhere. 



Garex rigida, Good. — Hot Sulphur Springs; Falls of the Yellowstone. 



Garex aurea, Nutt. — Fort Ellis to the Yellowstone. 



Garex Baynoldsii, Dew. — Yellowstone Lake ; Great Falls of the Yel- 

 lowstone. 



Garex lanuginosa, Michx. — Stinking Water Creek. 



Garex wmathorhyncha, Desv. — Pleasant Valley, Northern Idaho. 



Garex utriculata, Boott., var. minor, Boott. — Yellowstone Lake; Madi- 

 son Valley. 



Garex ampullacea, Good. — ^Yellowstone Eiver. 



Geaminace^. 



Alopecurus alpinus, Smith. — Stinking Water Creek. — It has most of 

 the florets awnless, and the remainder with a very short awn. 



Fhleum alpimim, L. — Fort Ellis to the Yellowstone ; Yellowstone 

 Lake; Falls of the Yellowstone. 



Yilfa asperifolia, Nees and Meyen. — Hot Sulphur Springs. 



Yilfa asperifolia, Nees and Meyen., var. filiformis, Thurber. — Upper 

 Falls of the Yellowstone. 



Agrostis perennans, Tuckerm. — Upper Falls of the Yellowstone. 



Agrostis scahra, Willd. — Mud Springs ; Yellowstone Lake ; Yellow- 

 stone River. 



Muhlenbergia Mexicana^ Trin. — ^Fort Ellis to the Yellowstone. 



Vaseya comata, Thurber. — Gray's Peak, Colorado Territory, Br. George 

 Smith. 



Galamagrostis Ganadensis, Beauv. — Yellowstone Lake. 



Galamagrostis Langsdorffii, Trin. — Upper Falls of the Yellowstone. 



Galamagrostis striata, Trin. — ^Yellowstone Lake; Yellowstone Eiver. 



Galamagrotis sylvatica, D. C. — Lower Falls of the Yellowstone. 



Eriocoma cv.spidata^ Nutt. — Mud Springs; Hot Sulphur Springs. 



Stipa viridula, Trin. — Fort Ellis to the Yellowstone. 



Aristida purpurea^ Nutt. — Hot Sulphur Springs ; Yellowstone Lake. 



Bouteloua oligostachya, Torr. — Madison Valley ; Fish Creek. 



