three-rib arrowgrass
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Alismatales
- family: Juncaginaceae
- genus: Triglochin
- species: Triglochin striata
Gladesville- Hunters Hill
- Rhodes
New South Wales
Australia
Guapimirim
Rio de Janeiro- Palhoça
Santa Catarina
Brazil
Kendall- Pinecrest
- South Miami
Florida- Manteo
North Carolina- Florence
- Port Orford
- Waldport
Oregon
United States