At some point last spring, one of the trees disappeared. I don't even remember seeing a stump - it was just gone, with nothing but a patch of mulch where it once stood.
A few weeks ago, after heavy rains, the whole place started blooming in mushrooms. Lots and lots of them in big clumps. Here's one of the smaller clumps:
The biggest clump was about four times that size. No clue what kind they are, though they smell like portabellas. I guess the tree's symbiotic fungi are trying to find another tree.
Sidenote: my camera still takes macro shots because I remember what sequence of buttons to hit to get there, but I have no control over where it autofocuses. Thus the ..uhh, softening.. if you embiggen.