Opium poppy
Opium poppy, Papaver somniferum var. album, is a species of plant. Opium and poppy seeds come from poppies.  A great number of opiates, such as morphine, heroin, and codeine, are made from opium.  The Latin name for the opium poppy means "sleep-bringing poppy, white form," probably because some of these opiates make people feel sleepy.