Polysiphonia sparsa
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Ceramiales
- family: Rhodomelaceae
- genus: Polysiphonia
- species: Polysiphonia sparsa
Ifalik
Yap
Micronesia, Federated States Of- United States
Polysiphonia sparsa Ifalik
Hanapēpē