Chester A. Reed, Flower Guide: Wild Flowers East of the Rockies
“ We all marvel at the industry of the honey bee; how tirelessly it buzzes from flower to flower, from each gathering a drop of the nectar, with which it fills its cells; but we do not always realize the double duty it is doing, for it is a most reliable and active agent for the propagations of a great many plants. Many butterflies, bees, and even beetles unconsciously accomplish the same result, and it is now conceded that each has special colors that are attractive to them. For instance, the bumblebee has a strong preference for blues and purples. ”
