Sporangium des Acker-Schachtelhalms  <i><a href="//commons.wikimedia.org/wiki/Equisetum_arvense" title="Equisetum arvense">Equisetum arvense</a></i>, Rostock
Kristian Peters -- <a href="//commons.wikimedia.org/wiki/User:Fabelfroh" title="User:Fabelfroh">Fabelfroh</a> 12:38, 2 August 2006 (UTC)
CC BY-SA 3.0
<span class="int-own-work">Self-photographed</span>