Euphorbia exigua
dwarf spurge
Euphorbia peplus
petty spurge
devil's milk
Collinsonia canadensis
horseweed
stoneroot
horse balm
richweed
stone-root
stone root
Centaurea solstitialis
Cycloloma atriplicifolium
yellow star-thistle
Barnaby's thistle
winged pigweed
showy sunflower
tumbleweed
Helianthus laetiflorus
field sandbur
sandbur
Cenchrus tribuloides
sandspur
shepherd's clock
Tragopogon pratensis
goatsbeard
meadow salsify
Russian tumbleweed
false bugbane
wolf's milk
Trautvetteria carolinensis
Euphorbia esula
leafy spurge
Russian cactus
Russian thistle
Salsola kali tenuifolia
Indian chickweed
Molluga verticillata
carpetweed
Callirhoe involucrata
purple poppy mallow
king devil
yellow hawkweed
Hieracium praealtum
Panicum capillare
false heather
tumble grass
yellow spiny daisy
big sagebrush