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Species · Lichens

Blackthread Lichen

Placynthium nigrum

1,151Records since 2000
JulyPeak month
62Counties with records

When it is recorded

Jan45
Feb64
Mar89
Apr110
May117
Jun112
Jul131
Aug119
Sep110
Oct103
Nov83
Dec20

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

Where it is recorded

#CountyNationRecordsShare
1Gloucestershire England105
2Somerset England78
3Dorset England76
4Highland Scotland62
5Devon England59
6Lincolnshire England45
7North Yorkshire England34
8Argyll and Bute Scotland29
9Cornwall England25
10Perth and Kinross Scotland22
11Bristol, City of England21
12Pembrokeshire Wales20
13Worcestershire England19
14Carmarthenshire Wales18
15Fermanagh and Omagh Northern Ireland15
885 England154 Scotland80 Wales28 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 62 counties in all.

About this species

Records since 2000
1,151
Peak month
July
Counties with records
62
Scientific name
Placynthium nigrum
Group
Lichens
NBN Atlas records since 2000
73
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Peltigerales
Family
Placynthiaceae
Genus
Placynthium
Name with authority
Placynthium nigrum (Huds.) Gray
Contributing datasets
25

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q15089598 · GBIF 7250436