Penstemon digitalis species, which can be important for taxonomy. Scientists estimated the genome size for 40% of the species in the genus; using "Flow Cytometry." "Penstemon digitalis" has one of the largest genomes of the genus"Penstemon". Like other "Penstemon" species, it is used in roadside planting because it is easily grown and showy. It is recommended for easy use in gardens from the Midwest to the Atlantic coast and Pacific Northwest by the American Penstemon Society. "Iowa's Living Roadway Profiler" from the Iowa Department of Transportation says that the plant's "decorative seed capsules add interest in the fall and winter". One of
Drug pollution Drug pollution Drug pollution or pharmaceutical pollution is pollution of the environment with pharmaceutical drugs and their metabolites, which reach the aquatic environment (groundwater, rivers, lakes, and oceans) through wastewater. Drug pollution is therefore mainly a form of water pollution. "Pharmaceutical pollution is now detected in waters throughout the world," said a scientist at the Cary Institute of Ecosystem Studies in Millbrook, New York. "Causes include aging infrastructure, sewage overflows and agricultural runoff. Even when wastewater makes it to sewage treatment facilities, they aren't equipped to remove pharmaceuticals." Most such pollution comes simply from the drugs having been cleared and