|Prairie Phlox, Phlox pilosa|
Dark pink lines near the corolla opening
act as nectar guides for pollinators.
|Illustration approximating the |
bee's view of the flower rays
absorbing and reflecting
Flower Color & Color Change
|Heptica flower buds|
are often a different
color than the sepals,
and once open, flower
color changes as it
Flower Shape & Color Contrast
Color contrast between more than one color on the corolla, or between the color of the anthers and petals also serves as an attractant to flower visitors.
New England aster, Symphyotrichum novae-angliae (left), has contrasting lavender rays and yellow-orange disc florets in the center. The open, flat-topped flowers are any easy landing pad for bees, flies, beetles and butterflies.
McCrea, K. D., & Levy, M. (1983). Photographic visualization of floral colors as perceived by honeybee pollinators. American journal of botany, 369-375.
Willmer, P. (2011). Pollination and floral ecology. Princeton University Press.