Hypoglossum tenuifolium
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Delesseriaceae
- genus: Hypoglossum
- species: Hypoglossum tenuifolium
Duncan Town
Ragged Island
Bahamas
Guánica
Guanica- La Parguera
Lajas
Puerto Rico
Vieux Fort
Vieux-Fort
Saint Lucia
Key West
Florida
United States
Cruz Bay
Saint John Island
Virgin Islands, U.S.