Orobanche genus --- Broomrape family

desert broomrape (Orobanche cooperi) -- in March -- Corn Springs Road,  southern California  blue & purple    

clustered broomrape (Orobanche fasciculata)-- in May -- Reservoir Ridge Natural Area, Fort Collins, CO        green & brown      

clustered broomrape (Orobanche fasciculata)  -- in June -- Mill Creek Link Trail, Lory State Park, CO

oneflowered broomrape (Orobanche uniflora) -- in May -- Plainview Road Open Space, Jefferson County, CO    blue & purple