Collema crispum
Description
Small thallus of greenish brown to black overlapping lobes, slightly swollen when moist. Lobe margins may be ascending, wavy, entire or crenate, never swollen.
Identification difficulty

Habitat
On damp, calcareous substrates; walls, crumbling mortar, rocks.
When to see it
All year round.
UK Status
Most records seem to come from the southern half of Britain.
VC55 Status
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
Enter a town or village to see local records
MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015