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Species · Seaweeds and algae

Witch's hair

Desmarestia aculeata

1,623Records since 2000
SeptemberPeak month
27Counties with records

When it is recorded

Jan108
Feb10
Mar30
Apr30
May143
Jun137
Jul249
Aug346
Sep448
Oct47
Nov19
Dec8

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

Where it is recorded

#CountyNationRecordsShare
1Cornwall England60
2Orkney Islands Scotland26
3Ards and North Down Northern Ireland21
4Highland Scotland18
5Causeway Coast and Glens Northern Ireland17
6Shetland Islands —14
7Newry, Mourne and Down Northern Ireland14
8Gwynedd Wales10
9Argyll and Bute Scotland8
10Aberdeenshire Scotland8
11Fife Scotland7
12Na h-Eileanan Siar Scotland7
13Pembrokeshire Wales6
14Mid and East Antrim Northern Ireland6
15Devon England5
613 England530 Scotland106 Wales229 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 27 counties in all.

About this species

Records since 2000
1,623
Peak month
September
Counties with records
27
Scientific name
Desmarestia aculeata
Group
Seaweeds and algae
NBN Atlas records since 2000
1,555
Most recorded in
Cornwall
Kingdom
Chromista
Phylum
Ochrophyta
Class
Phaeophyceae
Order
Desmarestiales
Family
Desmarestiaceae
Genus
Desmarestia
Name with authority
Desmarestia aculeata (L.) J.V.Lamour.
Contributing datasets
34

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q2325706 · GBIF 5423373