Exstrom Laboratories
Scientific Instruments
Copyright 2005-2020
Exstrom Laboratories LLC
Authors: Stefan and Richard Hollos
All images are licensed under the
Creative Commons Attribution 4.0 International License.
Archive
Macro/Micro Picture of the Day
August 20, 2020
Black-Eyed Susan Flower
Here is a black-eyed susan (Rudbeckia hirta) flower in the foothills of Boulder County, Colorado. The plant is native to central and eastern North America, but now grows in all of the lower 48 United States as well as all 10 provinces of Canada. The Potawatomi used it to treat colds.
Equipment used: Canon EOS Rebel T5i with a standard zoom lens (EF-S 18-55 mm).