euphorbia genus --- spurge family

whitemargin sandmat (Euphorbia albomarginata) -- in March -- Boyce Thompson Arboretum State Park, AZ      white & cream   

horned spurge (Euphorbia brachycera) -- in May -- Red Mountain Open Space, Larimer County Open Space, CO   green & brown  

horned spurge (Euphorbia brachycera) -- in May -- Neva Road/ 36, Boulder County, CO

toothed spurge (Euphorbia dentata) -- in August -- Watson Lake State Wildlife Area, CO             green & brown            

beetle spurge (Euphorbia eriantha) -- in April -- Big Bend Ranch State Park, TX     white & cream   

Fendler's sandmat (Euphorbia fendleri) -- in April -- Arches National Park, UT      white & cream

snow on the mountain (Euphorbia marginata) -- in August -- Lefthand Canyon, Boulder, CO          white & cream      

myrtle spurge (Euphorbia myrsinites) -- in March -- South Valley Park, Jefferson County Open Space, CO     green & brown   

warty spurge (Euphorbia spathulata) -- in May -- Neva Road/ 36, Boulder County, CO        green & brown

leafy spurge (Euphorbia virgata) -- in May -- Bellvue, Larimer County foothills     green & brown        

leafy spurge (Euphorbia virgata) -- in June -- Watson Lake State Wildlife Area, CO    green & brown 

leafy spurge (Euphorbia virgata) -- in April -- Timber Trail, Lory State Park, CO    green & brown

leafy spurge (Euphorbia virgata) -- in April -- Poudre River Trail, Weld County, CO