This video is called Fungi: Death Becomes Them – CrashCourse Biology #39.
Translated from the Dutch Mycological Society:
Wednesday, October 1st, 2014
A few weeks ago the very rare Neolentinus schaefferi mushroom was discovered in the PWN dunes at Bakkum. In the Netherlands Neolentinus schaefferi so far had been known from six different locations of which now three have disappeared. Ever since a few weeks, Neolentinus schaefferi at Bakkum is basking in the sun on an old polar stump. That mushrooms develop in such a sunny location is amazing.