pinnate prairie coneflower, ratibida pinnata, inflorescence

yellow flower plant petal green wildflower nature leaf sunflower sunlight pollen daisy herb field produce blossom pinnate prairie coneflower ratibida pinnata species flowering aster family asteraceae gray head grows prairies hairy stemmed bearing heads drooping rays surrounding roundish ellipsoid greyish central disk inflorescence botanical flora coneflower pinnata asteraceae gray-head coneflower drooping ellipsoid