Here’s how the poppy came to symbolize World War I. Gary Krupnick The seeds of common poppy (Papaver rhoeas) only germinate when the soil in which they live is disturbed. Intense fighting during ...

In the "Shirley" poppies (Papaver Rhoeas L.), the presence of a white margin of the petals is a dominant character and is probably due to an inhibitor limited in its effective action to the margins of ...