File:Cynanchum laeve (Michx.) Pers.jpg

Summary
This public domain image is from the PLANTS database, http://plants.usda.gov/java/largeImage?imageID=gola5_001_avd.tif

Here is the copyright information provided for this specific image at http://plants.usda.gov/java/usageGuidelines?imageID=gola5_001_avd.tif

"This image is not copyrighted and may be freely used for any purpose. Please credit the artist, original publication if applicable, and the USDA-NRCS PLANTS Database. The following format is suggested and will be appreciated:

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 36."