Confidence: I'm as sure as I can be.
Notes: Sorry, not H. physodes, though that species forms similar "lip-shaped" soralia (the green, powdery bits) at the ends of the lobes. However its lobes are more shiny and are hollow and slightly inflated. Also there are some apothecia (fruit-bodies) developing, of the Physcia type, whereas in Hypogymnia they are rare and a different shape. Note that in the photo, the lobes are initially slightly hooded at the tips, which might lead to misidentification as P. adscendens, but then the tips of the hoods roll back in just the way that P. adscendens does not.