Tar Lichen

Hydropunctaria maura

1,792Records since 2000

AugustPeak month

39Counties with records

When it is recorded

Jan24

Feb25

Mar38

Apr71

May166

Jun285

Jul213

Aug432

Sep292

Oct73

Nov68

Dec15

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

#	County	Nation	Records
1	Na h-Eileanan Siar	Scotland	146
2	Highland	Scotland	107
3	Argyll and Bute	Scotland	99
4	Shetland Islands	—	67
5	Cornwall	England	60
6	Dumfries and Galloway	Scotland	50
7	Scottish Borders	Scotland	49
8	Orkney Islands	Scotland	48
9	Pembrokeshire	Wales	43
10	Devon	England	38
11	Gwynedd	Wales	33
12	Ards and North Down	Northern Ireland	29
13	Causeway Coast and Glens	Northern Ireland	24
14	Swansea	Wales	18
15	Newry, Mourne and Down	Northern Ireland	15

364 England902 Scotland260 Wales212 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 39 counties in all.

Records since 2000: 1,792
Peak month: August
Counties with records: 39
Scientific name: Hydropunctaria maura
Group: Fungi
NBN Atlas records since 2000: 1,383
Most recorded in: Na h-Eileanan Siar, Highland, Argyll and Bute, Shetland Islands, Cornwall, Dumfries and Galloway
Conservation designations: GB Red List (2001 IUCN criteria)
Kingdom: Fungi
Phylum: Ascomycota
Class: Eurotiomycetes
Order: Verrucariales
Family: Verrucariaceae
Genus: Hydropunctaria
Name with authority: Hydropunctaria maura (Wahlenb. ex Ach.) C.Keller, Gueidan & Thüs
Contributing datasets: 48