| Opium, an exudate of Papaver somniferum, a poppy cultivated historically in Asia, was already well known to Galen. |
| Papaver Marcus Perry is a beautiful, ornamental variety with deep red petals and a centre that is as black as a raven's wing. |
| Papaver rhoeas Produces simple bright red flowers and will self-seed for next year as well. |
| Ontogeny and cytochemistry of alkaloidal vesicles in laticifers of Papaver somniferum, American Jour. |
| The field poppy or corn poppy, Papaver rhoeas, is the poppy of wartime remembrance. |
| All sorts of poppies can be sown in this way too, including the red corn poppy, Papaver rhoeas. |
