Chewing Gum Lichen - Protoparmeliopsis muralis

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Alternative names
Lecanora muralis
Description

Usually forms a loose rosette with a pale greeny white thallus. The fruits are common and usually buff coloured, but green when wet.

Identification difficulty
Habitat

On rocks, concrete and other urban substrates that are enriched with nitrogen - such as from bird droppings.

When to see it

All year round.

UK Status

Widespread and becoming very common in urban areas, less so in the north of Scotland and extreme south-west of England.

VC55 Status

Common in Leicestershire and Rutland.

  • David Nicholls
    Groby Pool
    17 February 2013
  • David Gould
    G.U. Canal, St Mary's Mills, Leicester
    26 March 2010
    on concrete bridge
  • David Nicholls
    Groby Pool
    17 February 2013
  • Saharima Roenisch
    Ethel Road, Leicester
    24 December 2017
  • Graham Calow
    Sapcote
    01 March 2013
  • David Nicholls
    Bagworth Heath Woods
    12 January 2012
    boardwalk by lake

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species data profile ?

Species profile

Species group:
Lichens
Kingdom:
Fungi
Order:
Lecanorales
Family:
Lecanoraceae
Records on NatureSpot:
78
First record:
26/03/2010 (Gould, David)
Last record:
21/01/2025 (Graves, Hazel)

Total records by month

% of records within its species group

10km squares with records

The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.

In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.

Latest images

Latest records

  • David Nicholls
    Groby Pool
    21 March 2014
  • David Nicholls
    Ratby
    28 February 2014
    on tarmac
  • David Gould
    The Spearwort Fields
    14 August 2013
  • David Nicholls
    Bagworth Heath Woods
    12 January 2012
  • David Nicholls
    Martinshaw Wood
    12 November 2011
  • David Nicholls
    Martinshaw Wood
    14 April 2012
  • David Nicholls
    Martinshaw Wood
    07 April 2013
  • David Nicholls
    Ratby, Sacheveral Way
    14 April 2012
    on tarmac
  • David Nicholls
    Martinshaw Wood
    12 November 2011
  • David Nicholls
    Ratby, Markfield Road
    05 November 2011
    on tarmac path
  • David Nicholls
    Kirby Muxloe Castle
    13 September 2013
  • Steve Mathers
    GUC (Loughborough to Pilling's Marina)
    04 March 2017