sessile-fruited arrowhead
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Alismatales
- family: Alismataceae
- genus: Sagittaria
- species: Sagittaria rigida
Beauharnois- Boisbriand
- Bécancour
- Yamachiche
Quebec
Canada
Broad Brook- East Hartford
- Hartford
- Seymour
Connecticut- Chicago
- Lyons
- North Riverside
- Riverside
- Summit
Illinois- Brookmont
- Cabin John
Maryland- Cathcart
Washington- Washington, D. C.
Washington, D.C.
United States