Aster:

AsterThere are over 600 species of aster, the most popular being the Monte Casino. Ancient people believed that the odor of its leaves, when burnt, drove away serpents. The English gave this flower two names, asters and starworts. Aster is Latin for star, and referred to its star-like shape. Wort meant root, which signified plants with healing properties. And Asters were laid on the graves of French soldiers to symbolize the wish that things had turned out differently.
The Emperor of China owned over 600 books about Roses.