the cup plant silphium perfoliatum.

america attracting background beautiful beauty best biomass birds bloom blooming blooms blossom botanical botany central closeup cover cultivated cup cupplant daisy eastern energy environment family field flora floral flower food garden gardening green herb herbal large leaf meadow medical native natural nature north offering one park perfoliatum petal plant plants pollen pollination season silphium summer sunlight sunny water wildflowers yellow