Sagittaria gramineaMichx.

grassy arrowhead

WFO wfo-0000736963 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Sagittaria graminea, photographed by Stan Shebs
fig. a Stan Shebs, CC BY-SA 4.0 / 2021-10-23 / obs. 180299124
Sagittaria graminea, photographed by Henry "Nick" Robertson
fig. b Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 155752445
Sagittaria graminea, photographed by Jason Hill
fig. c Jason Hill, CC BY 4.0 / obs. 152843614
Sagittaria graminea, photographed by Elias
fig. d Elias, CC BY 4.0 / obs. 132417810
Sagittaria graminea, photographed by novvictan
fig. e novvictan, CC BY 4.0 / obs. 117656583
Sagittaria graminea, photographed by Scott Ward
fig. f Scott Ward, CC BY 4.0 / obs. 112712631
Sagittaria graminea, photographed by Jessica
fig. g Jessica, CC BY 4.0 / obs. 80315750
Sagittaria graminea, photographed by Claire Herzog
fig. h Claire Herzog, CC BY 4.0 / obs. 78783199

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 45 botanical countries

Regions where Sagittaria graminea is native: Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Labrador, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Nova Scotia, Ohio, Oklahoma, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin, Cuba AlabamaArkansasColoradoConnecticutFloridaGeorgiaIllinoisIndianaIowaKansasKentuckyLabradorLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriNebraskaNew BrunswickNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNova ScotiaOhioOklahomaOntarioPennsylvaniaPrince Edward I.QuébecSouth CarolinaSouth DakotaTennesseeTexasVermontVirginiaWest VirginiaWisconsinCuba DelawareRhode I.
Native distribution of Sagittaria graminea, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Arkansas ARK
Colorado COL
Connecticut CNT
Delaware DEL
Florida FLA
Georgia GEO
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Labrador LAB
Louisiana LOU
Maine MAI
Maryland MRY
Massachusetts MAS
Michigan MIC
Minnesota MIN
Mississippi MSI
Missouri MSO
Nebraska NEB
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New Mexico NWM
New York NWY
North Carolina NCA
Nova Scotia NSC
Ohio OHI
Oklahoma OKL
Ontario ONT
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
South Carolina SCA
South Dakota SDA
Tennessee TEN
Texas TEX
Vermont VER
Virginia VRG
West Virginia WVA
Wisconsin WIS
Cuba CUB SOUTHERN AMERICA

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 16 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Diphorea graminea (Michx.) Raf.
  • Sagitta graminea (Michx.) Nieuwl.
  • Sagittaria acutifolia Pursh
  • Sagittaria cycloptera (J.G.Sm.) C.Mohr
  • Sagittaria eatonii J.G.Sm.
  • Sagittaria edwardsiana R.T.Clausen
  • Sagittaria graminea subsp. edwardsiana (R.T.Clausen) R.T.Clausen
  • Sagittaria graminea var. cycloptera J.G.Sm.
  • Sagittaria graminea var. elliptica N.Coleman
  • Sagittaria graminea var. graminea
  • Sagittaria graminea var. weatherbiana (Fernald) Bogin
  • Sagittaria purshii Rich.
  • Sagittaria sagittifolia var. simplex (Pursh) Hook.
  • Sagittaria simplex Torr.
  • Sagittaria stolonifera Engelm. & A.Gray
  • Sagittaria weatherbiana Fernald

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.