Family: Cladoniaceae
Cladonia pocillum (Ach.) Grognot
Type: Cladonia
Found on rocks, soil and mortar where the substrate is at moderately base-rich. It can be difficult to distinguish from C. pyxidata
References:
Smith, C.W. et al. editors (2009) The Lichens of Great Britain and Irelandd
Dobson, F.S. (2018) Lichens: an Illustrated Guide to the British and Irish Species
Ahti, Stenroos & Moberg. editors (2013) Nordic Lichen Flora. Volume 5 Cladoniaceae