MARIA MOSOLOVA / SCIENCE PHOTO LIBRARY MARIA MOSOLOVA / SCIENCE PHOTO LIBRARY
Foxglove (Digitalis purpurea) flowers. This plant has long been used in herbal medicine as a tonic, and an extract from the plant (the drug digoxin) is used in conventional medicine as a treatment for heart failure. Photographed in Maryland, USA.
Model release not required. Property release not required.