''Thinopyrum elongatum'', the tall wheatgrass, is a species of perennial herb in the family

Poaceae Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivate ...

(true grasses). They have a self-supporting growth form and simple, broad leaves and yellow flowers. Individuals can grow to 5 feet tall.

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References

elongatum Grasses of Lebanon {{Pooideae-stub