sonchus genus --- aster subfamily 1

moist sow-thistle (Sonchus arvensis ssp. uliginosus) -- in August -- Ramsay-Shockey Open Space, Larimer County, CO  yellow & orange ​

moist sow-thistle (Sonchus arvensis ssp. uliginosus) -- in July -- Red Feather Lakes area, CO      yellow & orange 

moist sow-thistle (Sonchus arvensis ssp. uliginosus) -- in August -- Hutton Lake National Wildlife Refuge, southern WY

moist sow-thistle (Sonchus arvensis ssp. uliginosus) -- in August -- Redwing Marsh, Fort Collins Natural Area, Larimer County, CO

spiny sowthistle (Sonchus asper) -- in September -- Lincoln National Forest, NM     yellow & orange   

​spiny sowthistle (Sonchus asper) -- in June -- St. Vrain State Park, CO      ​yellow & orange 

​spiny sowthistle (Sonchus asper) -- in September -- Big Thompson Ponds State Wildlife Area, CO     ​yellow & orange 

​spiny sowthistle (Sonchus asper) -- in August -- Redwing Marsh, Fort Collins Natural Area, Larimer County, CO