GEOLOGICAL SURVEY OF THE TEERITOEIES. 485 



BricltelUa grandiflora, Nutt., var. minor, Gray. — Gray's Peak, Colo- 

 rado Territory, Dr. George iSmith. 



Alachceranthera canescens, Nutt. — Between Madison and Jefferson 

 Eivc.rs. 



Aster integrifolius, Nutt. — Mud Springs ; Yellowstone Lake ; Falls of 

 the Yellowstone. 



Aster adscendens, Lindl., var. — Yellowstone Lake. 



Aster falcatus, Lindl. — Hot Sulphur Springs. 



Aster multiflorus, Ait. — Fish Creek, Jefferson Yalley ; Boteler's Eanch. 



Aster glacialis, Nutt. — Lower Falls of the Yellowstone. 



Aster salsiigmosusj Eich. — Lower Falls of the Yellowstone. 



Aster Haydeni, sp. nov. — Stems (1-3) from an erect transversely fur- 

 rowed caudex, lanulose above, 3 to 5 inches high, each bearing a single 

 head of medium size ; radical leaves linear, grass-like, 3 to 4 inches 

 long, 1 to 2 lines wide, rather acute, 3-nerved; cauline leaves few, 

 smaller ; scales of the involucre in about 3 series, lance-linear, often 

 purplish, acute, with scarious lacerately fringed margins, shorter than 

 the disk; rays apparently purplish; style of the disk-florets with subu- 

 late branches, of which the hispid portion is 3 times as long as the 

 stigmatic; achenia linear-oblong, nearly 3 lines in length, 6 to 8 costate, 

 slightly villous at the summit; setae of the pappus minutely barbellate. — 

 This x>lant belongs to the section XylorMza and is allied to A. Ander- 

 sonii, Gray, from which it is chiefly distinguished by its almost glabrous 

 achenium and narrower involucral scales. — Upper Falls of the Yellow- 

 stone. 



Aster elegans, T. and G. — Hot Sulphur Springs. 



Aster Ungelmanni, Gray. — Yellowstone Lake. 



Aster glaucus, T. and G. — Boteler's Eanch. 



Erigeron Canadense, L. — Ogden, Utah Territory. 



Erigeron compositum, Pursh. — Upper Falls of the Yellowstone. 



Erigeron compositum, Pursh, var. discoideum, Gray. — Yellowstone Lake. 



Erigeron grandiflorum, Hook., var. elatius, Gray. — Gray's Peak, Col- 

 orado Territory, I>r. George Smith. 



Erigeron acre, L. — Madison Valley. 



Erigeron Bellidiastrum, Nntt. — ISIear Ogden, Utah Territory. 



Erigeron macrantlmm, Nutt. — Yellowstone Lake. 



Erigeron glahellum, 'Nntt. — Pleasant Valley ; Madison Valley. 



Erigeron corymhosum, Kutfc. — Pleasant Valley; Mud Springs. 



Erigeron cces2ntosum,'NvLtt. — Stinking Water Creek; Mud Springs. 



Erigeron canescens, T. and G. — Stinking Water Creek. 



Eiplopappus alpinus, Nutt. — Stinking Water Creek. 



Diplopappus alpinus, Nutt., var.— Mountains south of Virginia City. 



Toicnsendia spatJmlata, IS^utt.— Mountains south of Virginia City. 



Totonsendia grandifiora, Nutt. — Mountains south of Virginia City. 



Toicnsendia scapigera, D. C. Eaton, (C. King's Eep., vol. V., p. 145,) 

 var. elatior. — Scapes 3 to 9 inches high ; leaves more or less acute. 



SoUdago Virga-aurea, L. — Mud Springs; Yellowstone Lake; Upper 

 Falls of the Yellowstone. 



SoUdago Yirga-aurea, L., var. alpina, T. and G. — Hot Sulphur Springs. 



SoUdago gigantea, Ait. — Boteler's Eanch; Yellowstone Lake. 



Linosyris viscidiflora, T. and G. — Yellowstone Eiver. 



Linosyris Soicardiij Parry. — Crow Agency. 



Aplopappus acaidis, Gray .-^Mountains south of Virginia City. 



Aplopaypus pygnums. Gray. — Gray's Peak, Colorado Territory, Br. 

 Smith. 



Aplopappus cces'pitosus, Gray. — Stiuldng Water Creek. 



