clasping coneflower (rudbeckia amplexicaulis). budding capitulum closeup

anthesis asteraceae belarus flora black background botanical science botany capitulum clasping coneflower closeup compositae conical dracopis amplexicaulis floret flower focus stacking head herbaceous inflorescence involucral bract involucre lanceolate ligulate ligule linear macro nature ovoid peduncle phyllary plants radiate ray rudbeckia virtual herbarium