Bracket fungus, possibly Ganoderma adspersum, Ganoderma applanatum or Ganoderma australe. River Ver path, St Albans, Hertfordshire, England, UK.
Gary Houston <a href="//commons.wikimedia.org/wiki/User:Ghouston" title="User:Ghouston">Ghouston</a> 16:41, 23 October 2005 (UTC)
<span class="int-own-work" lang="en">Own work</span>