painting of a bird, a bat, a bee, and a butterfly pollinating flowers
Purple Nightshade, Morrison’s Bumblebee approved stamp art

Illustrator: Steve Buchanan

The Purple Nightshade is a semi-evergreen perennial plant native to California but also found throughout most of North America. Its blue-purple flowers attract the Morrison’s Bumblebee, which uses its vibrating wings to loosen pollen from the plant.

Courtesy United States Postal Service, Postmaster General's Collection