Botanical Chart: Pollination and Pollinators, University of Wisconsin.
Flowering plants are intimately tied to wind, water, and especially animals to make seeds and complete their life cycles. Showy flowers, big and small, owe their size, shape, perfume and color to the preferences of critters; insects especially may share any number of blooms from different plant species. This poster illustrates the kaleidoscopic diversity of both the flowers and their pollinators (the astute observer will note that bumblebees love blue).
(Available for purchase from the University of Wisconsin.)