| canada | | fucus distichus | species | 3 | 0 |
| canada | british columbia | fucus distichus | species | 49 | 0 |
| canada | british columbia | fucus spiralis | species | 7 | 0 |
| canada | manitoba | fucus distichus | species | 9 | 0 |
| canada | manitoba | fucus spiralis | species | 1 | 0 |
| canada | new brunswick | fucus distichus | species | 4 | 0 |
| canada | new brunswick | fucus spiralis | species | 3 | 0 |
| canada | new brunswick | fucus vesiculosus | species | 7 | 0 |
| canada | new brunswick | fucus vesiculosus var. spiralis | no rank | 1 | 0 |
| canada | newfoundland and labrador | fucus distichus | species | 10 | 0 |
| canada | newfoundland and labrador | fucus spiralis | species | 4 | 0 |
| canada | nova scotia | fucus distichus | species | 14 | 0 |
| canada | nova scotia | fucus serratus | species | 9 | 0 |
| canada | nova scotia | fucus spiralis | species | 4 | 0 |
| canada | nova scotia | fucus vesiculosus | species | 5 | 0 |
| canada | nova scotia | fucus vesiculosus var. spiralis | no rank | 1 | 0 |
| canada | nunavut | fucus distichus | species | 1 | 0 |
| canada | prince edward island | fucus serratus | species | 2 | 0 |
| france | | fucus distichus | species | 1 | 0 |
| france | | fucus spiralis | species | 2 | 0 |
| france | | fucus vesiculosus | species | 1 | 0 |
| france | aquitaine region | fucus ceranoides | species | 2 | 0 |
| france | bretagne region | fucus ceranoides | species | 5 | 0 |
| france | bretagne region | fucus serratus | species | 33 | 0 |
| france | bretagne region | fucus spiralis | species | 1 | 0 |
| france | bretagne region | fucus vesiculosus | species | 2 | 0 |
| france | haute-normandie region | fucus vesiculosus | species | 2 | 0 |
| france | nord-pas-de-calais region | fucus spiralis | species | 3 | 0 |
| france | nord-pas-de-calais region | fucus vesiculosus | species | 3 | 0 |
| france | provence-alpes-cote d'azur region | fucus ceranoides | species | 3 | 0 |
| iceland | | fucus vesiculosus | species | 1 | 0 |
| iceland | capital region | fucus vesiculosus | species | 805 | 0 |
| ireland | | fucus ceranoides | species | 4 | 0 |
| ireland | munster province | fucus ceranoides | species | 1 | 0 |
| isle of man | | fucus ceranoides | species | 1 | 0 |
| isle of man | | fucus vesiculosus | species | 3 | 0 |
| italy | friuli-venezia giulia autonomous region | fucus virsoides | species | 1 | 0 |
| italy | veneto region | fucus virsoides | species | 1 | 0 |
| japan | | fucus evanescens | species | 1 | 0 |
| japan | hokkaido prefecture | fucus distichus | species | 1 | 0 |
| japan | hokkaido prefecture | fucus distichus subsp. evanescens | subspecies | 2 | 0 |
| morocco | | fucus spiralis | species | 1 | 0 |
| morocco | | fucus vesiculosus | species | 2 | 0 |
| norway | | fucus serratus | species | 1 | 0 |
| norway | | fucus vesiculosus | species | 2 | 0 |
| norway | hordaland county | fucus serratus | species | 2 | 0 |
| norway | hordaland county | fucus spiralis | species | 2 | 0 |
| norway | hordaland county | fucus vesiculosus | species | 2 | 0 |
| norway | more og romsdal county | fucus serratus | species | 0 | 1 |
| norway | nordland county | fucus ceranoides | species | 2 | 0 |
| norway | nordland county | fucus distichus | species | 1 | 0 |
| norway | nordland county | fucus serratus | species | 1 | 0 |
| norway | nordland county | fucus spiralis | species | 4 | 0 |
| norway | nordland county | fucus vesiculosus | species | 2 | 0 |
| norway | telemark county | fucus vesiculosus | species | 1 | 0 |
| portugal | | fucus ceranoides | species | 34317 | 0 |
| portugal | | fucus spiralis | species | 3 | 0 |
| portugal | | fucus vesiculosus | species | 3 | 0 |
| portugal | braga district | fucus ceranoides | species | 4 | 0 |
| portugal | braga district | fucus spiralis | species | 2 | 0 |
| portugal | braga district | fucus vesiculosus | species | 1 | 0 |
| portugal | faro district | fucus spiralis | species | 2 | 0 |
| portugal | faro district | fucus vesiculosus | species | 1 | 0 |
| portugal | lisboa district | fucus spiralis | species | 1 | 0 |
| portugal | lisboa district | fucus vesiculosus | species | 1 | 0 |
| spain | | fucus ceranoides | species | 51 | 0 |
| spain | asturias | fucus ceranoides | species | 6 | 0 |
| spain | asturias | fucus spiralis | species | 1 | 0 |
| spain | canary islands | fucus spiralis | species | 1 | 0 |
| spain | cantabria | fucus ceranoides | species | 3 | 0 |
| spain | cantabria | fucus spiralis | species | 1 | 0 |
| spain | cantabria | fucus vesiculosus | species | 1 | 0 |
| spain | galicia | fucus ceranoides | species | 5 | 2 |
| spain | galicia | fucus spiralis | species | 0 | 1 |
| spain | galicia | fucus vesiculosus | species | 1 | 2 |
| united kingdom | england | fucus ceranoides | species | 1 | 0 |
| united kingdom | england | fucus serratus | species | 2 | 0 |
| united kingdom | england | fucus vesiculosus | species | 0 | 1 |
| united kingdom | northern ireland | fucus vesiculosus | species | 2 | 0 |
| united kingdom | scotland | fucus ceranoides | species | 1 | 0 |
| united kingdom | scotland | fucus serratus | species | 2 | 0 |
| united kingdom | scotland | fucus vesiculosus | species | 2 | 0 |
| united kingdom | wales | fucus ceranoides | species | 3 | 0 |
| united states | | fucus distichus | species | 2 | 0 |
| united states | california | fucus distichus | species | 1 | 0 |
| united states | california | fucus gardneri | species | 2 | 0 |
| united states | california | fucus spiralis | species | 4 | 0 |
| united states | delaware | fucus vesiculosus | species | 1 | 0 |
| united states | maine | fucus distichus | species | 2 | 0 |
| united states | maine | fucus evanescens | species | 1 | 0 |
| united states | maine | fucus spiralis | species | 23 | 0 |
| united states | maine | fucus vesiculosus | species | 11 | 0 |
| united states | maine | fucus vesiculosus var. spiralis | no rank | 3 | 0 |
| united states | oregon | fucus spiralis | species | 1 | 0 |
| united states | oregon | fucus vesiculosus | species | 2 | 0 |
| united states | washington | fucus gardneri | species | 1 | 0 |
| united states | washington | fucus spiralis | species | 1 | 0 |