Bryothamnion triquetrum
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Rhodomelaceae
- genus: Bryothamnion
- species: Bryothamnion triquetrum
Welchman Hall
Saint Thomas
Barbados
Cartagena
Bolívar
Colombia
Puerto Limón
Limón
Costa Rica
Alamar
Guanabacoa
Havana
Cuba
La Julia
Nacional
Dominican Republic
Port-de-Paix
Ti Port-de-Paix
Nord-Ouest
Aquin
Sud
Haiti
Annotto Bay
St. Mary
Jamaica
Río Alejandro
Colón
Panama- United States
Saint Croix
Saint Croix Island
Virgin Islands, U.S.
Fuig
Hypoluxo