Photo By/Credit
John Heil/USbet365下载ios
Media Usage Rights/License
Public Domain
Image
Clint Pogue, a biologist with the bet365下载ios identifies a flower of Viola adunca, or Western Dog Violet; early blue violet during a rainy day in April near Arcata, California. The violet serves as a food source for the caterpillars of the Oregon silverspot butterfly. Credit: John Heil/USbet365下载ios
Species