Chestnut blight. Experimental trials of resistant <i>Castanea dentata</i> by the American Chestnut Foundation at Tower Hill Botanic Garden, Boylston, Massachusetts, USA.
<a href="//commons.wikimedia.org/wiki/User:Daderot" title="User:Daderot">Daderot</a>
2009-05-16
<span class="int-own-work" lang="en">Own work</span>