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Species · Lichens

Concentric Boulder Lichen

Porpidia crustulata

1,451Records since 2000
MayPeak month
74Counties with records

When it is recorded

Jan42
Feb88
Mar104
Apr144
May158
Jun136
Jul135
Aug149
Sep140
Oct102
Nov101
Dec57

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Highland Scotland106
2Cornwall England69
3Cumbria England66
4North Yorkshire England58
5Ceredigion Wales56
6Devon England52
7Perth and Kinross Scotland41
8Powys Wales37
9Worcestershire England30
10Argyll and Bute Scotland27
11Orkney Islands Scotland27
12Stockport England27
13East Lothian Scotland25
14Gwynedd Wales24
15Carmarthenshire Wales24
885 England367 Scotland168 Wales22 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 74 counties in all.

About this species

Records since 2000
1,451
Peak month
May
Counties with records
74
Scientific name
Porpidia crustulata
Group
Lichens
NBN Atlas records since 2000
95
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Lecideales
Family
Lecideaceae
Genus
Porpidia
Name with authority
Porpidia crustulata (Ach.) Hertel & Knoph
Contributing datasets
25

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q10567565 · GBIF 2603450