thickets of a poisonous plant hogweed

apiaceae background beautiful bloom blossom botany closeup common cow danger dangerous drawing ecology flora floral flower forest giant green growing head heracleum herbaceous hogsban hogweed illustration leaf mantegazzianum meadow native natural nature park parsnip perennial phototoxic plant poisonous rhubarb sap specie stalk stem summer toxic umbelliferous weed white wild wildflower