Pictured is a closeup view of Common foxglove flowers in shades of purple and white at Shaddock Park in University Park, Texas. The Common foxglove, Digitalis purpurea, family Plantaginaceae. The plant is well-known for its medicinal properties, containing a group of cardiac glycosides, including digoxin and digitoxin, which can be used to treat heart failure and certain arrhythmias.