Matthias Breiter / Chicken of the Woods (Laetiporus sulphureus) fungus growing on tree trunk, Tongass National Forest, Alaska

Gary K. Smith / Fungi, Dryads Saddle (Polyporus squamosus) fresh fruiting bodies on fallen tree stump. Norfolk, UK, May.

Philippe Clement / Tinder bracket fungus / Hoof fungus / Tinder polypore / Horse's hoof (Fomes fomentarius) on fallen tree trunk in autumn Beech forest. Ardennes, Belgium, November.

Philippe Clement / Tinder bracket fungus / Hoof fungus / Tinder polypore / Horse's hoof (Fomes fomentarius) on fallen tree trunk in autumn Beech forest. Ardennes, Belgium, November.

Adrian Davies / Hoof Fungus or Tinder Bracket (Fomes fomentarius) growing on Birch (Betula) tree trunk. Scotland, UK, February.

Nick Upton / Horse's hoof / Tinder fungus (Fomes fomentarius) growing on European beech (Fagus sylvatica) tree trunk, Plitvice Lakes National Park, Croatia, July.

Adrian Davies / Hen of the Woods Fungus (Grifola frondosa) growing at foot of tree in woodland, UK. October

Philippe Clement / Lumpy bracket fungus (Trametes gibbosa) on tree stump, Belgium

Laurie Campbell / Dryads Saddle Fungus (Polyporus squamosus), Berwickshire, Scotland, UK, July

Wild Wonders of Europe / Wothe / European beech (Fagus sylvatica) forest, with Tinder fungus (Fomes fomentarius) growing on the trunk of a tree, Stuzica primeval Forest, Unesco World Heritage Site, Poloniny National Park, Western Car...

Wild Wonders of Europe / Wothe / European beech (Fagus sylvatica) forest, Tinder fungus (Fomes fomentarius) growing on one of the tree trunks, Stuzica primeval Forest, Unesco World Heritage Site, Poloniny National Park, Western Carpa...

Wild Wonders of Europe / Wothe / Horse's hoof / Tinder fungus (Fomes fomentarius) growing on dead tree, Morske Oko Reserve, Vihorlat Mountains, Western Carpathians, Eastern Slovakia, Europe, May 2009