Scinaia johnstoniae
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Nemaliales
- family: Scinaiaceae
- genus: Scinaia
- species: Scinaia johnstoniae
La Jolla- San Pedro
- Santa Cruz
California
United States
Scinaia johnstoniae La Jolla San Pedro Santa Cruz