Thinopyrum elongatum

{{Short description|Species of plant}}

{{Speciesbox

| image =

| genus = Thinopyrum

| species = elongatum

| authority = (Host) D.R.Dewey

| synonyms = *Agropyron scirpeum C.Presl

• Elytrigia scirpea (C.Presl) Holub

}}

Thinopyrum elongatum, the tall wheatgrass, is a species of perennial herb in the family Poaceae (true grasses). They have a self-supporting growth form and simple, broad leaves and yellow flowers. Individuals can grow to 5 feet tall.{{Cite web|title=Thinopyrum elongatum (Host) D.R.Dewey - Encyclopedia of Life|url=https://eol.org/pages/52189832|access-date=2022-02-04|website=eol.org}}{{Cite web|last=Mifsud|first=Stephen|date=2002-08-23|title=Elytrigia scirpea (Flaccid-leaf Couch Grass) : MaltaWildPlants.com - the online Flora of the Maltese Islands.|url=https://www.maltawildplants.com/POAC/Elytrigia_scirpea.php|access-date=2022-02-16|website=www.maltawildplants.com|language=en-us|archive-date=2021-12-27|archive-url=https://web.archive.org/web/20211227184823/https://www.maltawildplants.com/POAC/Elytrigia_scirpea.php|url-status=dead}}