OF THE UPPER MISSOURI. 195 
Liatris scariosa, Willd. Western prairies, abundant. 
Pectis angustifolia, Torr. North Platte. 
Brickelia grandiflora, Nutt. Laramie mountains, August 24th. 
Macheranthera tanacetifolia, Nees. On Powder river, Yellowstone, and Bad Lands 
of the Judith. 
Macheeranthera canescens, Gray. (Aster canescens, Pursh.) Along the Missouri, at 
the mouth of the Big Shyenne, at Fort Clark, &c. 
Macheranthera viscosa (Dicteria viscosa, Nutt.). Common in prairie dog villages on 
the Yellowstone river ; only the lowest leaves are sharply and divaricately toothed, 
all others are linear and entire; the plant is annual or biennial, six to ten inches 
high, divaricately branched, the heads much smaller than in the foregoing species. 
Aster cordifolius, Linn. Not uncommon, Big Sioux and Niobrara. 
Aster saggitifolius, Willd. Big Sioux and Niobrara. 
Aster azureus, Lindl. Council bluffs. 
Aster multiflorus, Ait. Council bluffs. 
Aster sericeus, Vent. Fort Pierre. 
Aster Nove-Anglie, Ait. Low places on Missouri. 
Aster levis, Linn. Upper Missouri. 
Aster ptarmicoides, Nees. Black hills. 
Aster angustus, Torr. & Gray. Bad Lands of Judith. 
Aster pauciflorus, Nutt. Near Fort Union, September. 
Aster simplex, Willd. Shyenne river, September 3d. 
Aster glacialis, Nutt. Laramie mountains, August 24th. 
Townsendia grandiflora, Nutt. Eagle Nest butte, White river. 
Erigeron pumilum, Nutt. High hills around Fort Pierre. 
Erigeron strigosum, Muhl. Low places, Vermilion prairie. 
Erigeron Philadelphicum, Linn. Alluvial bottoms of Missouri. 
Erigeron Canadense, Linn. Common all over Missouri country. 
Erigeron compositum, Pursh. Sterile hills at Fort Union, without flower or fruit. 
Erigeron glabellum, Nutt. Prairies around Fort Pierre and the Yellowstone. 
Erigeron bellidiastrum, Nutt. Niobrara river, August 12th. 
Erigeron macranthum, Nutt. Black hills, September 10th. 
Aplopappus Nuttalli, Torr. and Gray. Bad Lands. 
Aplopappus lanceolatus. Fort Union. 
Aplopappus spinulosus, D. C. High prairies of the Upper Missouri. 
Boltonia glastifolia, L’Her. Bellevue, N. T. 
Gutiernezia Euthamiae, Torr. and Gray. Yellowstone country; also Black hills. A 
smoothish and a scabrous form. 
