Growing on a dark, damp wall. Images not as sharp as I'd hoped.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Lat/Lng: 51.5163, -0.0226
OS grid ref: TQ373815
On the towpath - a very damp wall with liquid oozing from a pipe above, which may have caused the discolouration.