When it is recorded
Jan0
Feb0
Mar6
Apr75
May85
Jun13
Jul12
Aug6
Sep133
Oct71
Nov26
Dec0
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | Gwynedd | Wales | 160 | |
| 2 | Powys | Wales | 91 | |
| 3 | Conwy | Wales | 33 | |
| 4 | Isle of Anglesey | Wales | 25 | |
| 5 | Wrexham | Wales | 20 | |
| 6 | Denbighshire | Wales | 19 | |
| 7 | Ceredigion | Wales | 17 | |
| 8 | Pembrokeshire | Wales | 16 | |
| 9 | Carmarthenshire | Wales | 13 | |
| 10 | Herefordshire, County of | England | 6 | |
| 11 | Swansea | Wales | 5 | |
| 12 | Monmouthshire | Wales | 5 |
11 England416 Wales
Records per county (GADM level 2) and per nation; one record can count towards several areas. 12 counties in all.
About this species
- Records since 2000
- 427
- Peak month
- September
- Counties with records
- 12
- Group
- Seaweeds and algae
- NBN Atlas records since 2000
- 427
- Kingdom
- Chromista
- Phylum
- Ochrophyta
- Class
- Bacillariophyceae
- Order
- Fragilariales
- Family
- Fragilariaceae
- Genus
- Fragilaria
- Name with authority
- Fragilaria bidens Heiberg, 1863
- Described
- 1863
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q67861198 · GBIF 3192307