What could it be?

[pilonm]

Hello all,

Here is a picture I took of what I think is a kind of lichen.

This picture was took at the Mauricie National Park in Quebec, Canada last fall 2008.

Any idea of what it is exactly?

Thank you very much in advance,

Michel Pilon
Quebec, Canada

http://parcours.pilonm.org/pictures/inconnu139.jpg