Callithamnion corymbosum
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Callithamniaceae
- genus: Callithamnion
- species: Callithamnion corymbosum
Chester
Nova Scotia
Canada
Gilleleje
Capital Region
Denmark
Port Antonio
Portland
Jamaica
Groton
Long Hill
New London
Connecticut
East Falmouth
Edgartown
Lynn
Nantucket
Oak Bluffs
Salem
Vineyard Haven
Massachusetts
United States
Helgoland
Påarp
Brighton