- Plant: River Birch (Betula nigra)
- Uploaded by SongofJoy
- Info: Stem, scape, stalk or bark / 2003-07-09 / Tennessee / License: Creative Commons (cc-by-sa-nc-3.0) (Attribution, ShareAlike, NonCommercial)
- Caption: Steven J. Baskauf http://bioimages.vanderbilt.edu/
