76 Muhlenbergia, Volume 9 
ASTER GEYERI (Gray) Howell 
Frequent along ravines and in thickets along rivers. 
ASTER HEBECLADUS DC. 
Common on the steppe throughout. 
ASTER LAETEVIRENS Greene 
Frequent in ravines in Slim buttes and Cave hills. 
ASTER MULTIFLORUS Ait. 
Uncommon on the foothills. 
ASTER PAUCIFLORUS Nutt. 
Fairly frequent on flood plains of Boxelder, etc. 
CHRYSOPSIS HIRSUTISSIMA Greene. Golden aster 
“This greatly extends the range of this species” (from Col- 
orado, its type locality). Numerous on the steppe and abund- 
ant in the bad land areas. 
CHRYSOPSIS MOLLIS Nutt. 
Frequent on the plains. 
CHRYSOTHAMNUS NAUSEOSUS (Pursh) Britton 
Abundant in bad lands. 
GRINDELIA PERENNIS A. Nelson. Gum plant. 
Locally frequent on the plains. 
M ACHAERANTHERA CANESCENS (Pursh) Gray 
Abundant in bad land areas. In full bloom at the end of 
August, 
SOLIDAGO CONCINNA A. Nelson. Goldenrod. 
Rare on the steppe. 
BIDENS VULGATA Greene 
Along brooks, not uncommon. 
GAERTNERIA ACANTHICARPA (Hook.) Britton 
Abundant on sandy soil along streams; locally common on 
sandy portions of the plains. 
MADIA GLOMERATA Hook. ‘Tarweed. 
Abundant on the foothills of East Short Pines. 
