Page:Popular Science Monthly Volume 55.djvu/707

Rh win, suddenly turned one year into a single white kind, and a chrysanthemum has been seen to bear both yellow and white flowers. It will be observed in the accompanying table that in all families in which yellow flowers are common, white are also common, except in the Hyperaceæ, which contain no white-flowered species. Some species of mustard regularly fade to white, while many white flowers