Alnus incana
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/63169246@N00">Radio Tonreg</a> from Vienna, Austria
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/tonreg/8336767251/">Alnus incana</a>