On an ornamental sugar maple. This is a zone of fairly clean air for downtown. The Parmelia here might not be getting the N that it needs, it looks a bit unhealthy.
Spring Bioblitz 2013
This is a foliose lichen that can be found on tree branches and the bark of Grand Fir trees. It's edges curl up and it has an off-white, pale-green, almost egg shell and sickly color. Up close, it looks to be from a horror movie, eating and consuming everything it touches.