Papaver orientale - image Papaver rhoeas - microscopic image Papaver dubium - Several photographs of the Long-headed Poppy, and information on features helping in its identification. Poppies - Photographic study by John Garrett of these plants and Papaver rhoeas in particular. Papaver somniferum: White Poppy - Illustration and information from Botanical.com, a modern herbal, on this poisonous plant, its description, constituents, medicinal action and uses. Papaver somniferum - Research project by Lindsay Wasicek at the University of Wisconsin-LaCrosse. Plant Cultures: Opium Poppy - A profile of Papava somniferum, its history, religious significance, production, trade, medicinal, food and other uses.