Diversity and adaptation are front and center. In the beginning dual-page introduction, readers are told to draw, examine, and dissect flowers to gain a true understanding.
Double-page treatments are devoted to discussions of color, pollen, or specific environments, to name a few. This is not a coherent well-developed study of the subject, but rather a progression of little "tastes" that presumably will create an appetite for later learning or provide the hook for more real research. It's a browser's feast, with little detail and no depth