Violet family (Violaceae)

Hybanthus

​babyslippers (Hybanthus verticillatus) -- in May -- Left Hand Trail, Boulder, CO     ​odd-shaped flowers

viola

hookedspur violet (Viola adunca) -- in June -- Lolo Motorway, Nez Perce-Clearwater National Forest, ID      blue & purple  ​     

hookedspur violet (Viola adunca) -- in June -- Sportsman Lake Road, southern Wyoming

field pansy (Viola bicolor) -- in April -- J. T. Nickel Preserve, northern Oklahoma     blue & purple  ​    

​field pansy  (Viola bicolor) -- in April -- Homestead Trail, South Mesa Trailhead, Boulder County, CO    blue & purple  

sweet white violet (Viola blanda) -- in April -- Cherokee National Forest, southern Tennessee     white & cream     

Canadian white violet (Viola canadensis) -- in April -- Pisgah National Forest, western North Carolina     white & cream ​   

Canadian white violet (Viola canadensis) -- in June -- Lory State Park, CO          white & cream          

Canadian white violet (Viola canadensis) -- in April -- Well Gulch Nature Trail, Lory State Park, CO    

halberdleaf yellow violet (Viola hastata) -- in April -- Pisgah National Forest, western North Carolina    yellow & orange      

small white violet (Viola macloskeyi) -- in July -- Old Fall River Road, Rocky Mountain National Park, CO     white & cream    

Nuttall's violet (Viola nuttallii)  -- in April -- Lory State Park, CO        yellow & orange    

bird's-foot violet (Viola pedata)  -- in April -- J. T. Nickel Nature Preserve, northern Oklahoma   blue & purple  ​   

downy yellow violet (Viola pubescens) -- in April -- Pisgah National Forest, western North Carolina    yellow & orange   

goosefoot violet (Viola purpurea ssp. venosa) -- in June -- Steens Mountain Wilderness Area, OR    yellow & orange ​

longspur violet (Viola rostrata)  -- in April -- Cherokee National Forest, southern Tennessee   blue & purple  ​   

wood violet (Viola sororia) -- in April -- J.T. Nickel Nature Preserve, northern Oklahoma          blue & purple