Stock Video - Timelapse footage of a young purple coneflower (Echinacea purpurea) opening. Coneflowers are composite flowers: the petals are actually flowers called ray florets, and the central spikes are the protective bracts of individual flowers called disc florets. Mastered from original frame size of 4288x2848. This clip has been cropped to 16:9. A full frame 4:3 version is availabe as reference number K003 7743.