lilac flower of cow's tongue (knautia arvensis).

flower plant wildflower nature leaf blossom produce shrub herb petal autumn grass meadow yellow green tree lilac cow tongue knautia arvensis mount low scrub beautiful beauty bee biology bloom blue botany closeup day devil devils bit scabious dipsacaceae fauna field flora floral fresh garden grassland horizontal insect landscape macro medicine natural outdoor pink pratensis purple spring succisa summer violet wild wildlife munilla rioja