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