Arthrocladia villosa
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Desmarestiales
- family: Arthrocladiaceae
- genus: Arthrocladia
- species: Arthrocladia villosa
- Abbeville
B6
France- East Falmouth
- North Eastham
- Teaticket
Massachusetts
United States