2023 Jesus Bonhomme Evin Soteras Jacomet Bouby Antolín Morphometrics waterlogged archaeological seeds give new insights domestication spread Papaver somniferum Western Europe PLoS ONE Multidisciplinary Sciences Technology Topics Domesticated opium poppy Papaver somniferum subsp somniferum probably originated Western Mediterranean possible wild progenitor Papaver somniferum subsp setigerum spread European regions Seeds opium poppy been