Actinotaenium curtum
- kingdom: Plantae
- phylum: Charophyta
- class: Zygnematophyceae
- order: Zygnematales
- family: Desmidiaceae
- genus: Actinotaenium
- species: Actinotaenium curtum
La Fermina
Las Piedras
Puerto Rico
Colma- Daly City
- Emeryville
California
United States