Aster
Bellis perennis
English daisy
Bidens cernua
nodding beggarticks
Bidens vulgata
tall beggarticks
Blepharipappus scaber
blepharipappus
Brickellia grandiflora
large-flowered tasselflower
Cacaliopsis nardosmia
tall silvercrown
Centaurea biebersteinii
spotted knapweed
Centaurea cyanus
bachelor's button
Centaurea diffusa
diffuse knapweed
Centaurea solstitialis
yellow starthistle
Chaenactis douglasii
dusty maidens
Ericameria viscidiflora
laceleaf green rabbitbrush
Cichorium intybus
chicory
Cirsium arvense
Canada thistle
Cirsium brevistylum
short styled thistle
Cirsium canovirens
gray-green thistle
Cirsium cymosum
peregrine thistle
Cirsium edule
Indian thistle
Cirsium occidentale
snowy thistle
Cirsium peckii
Steens Mountain thistle