General: Grass Family (Poaceae). Bluebunch wheatgrass is a perennial, native bunchgrass. Bluebunch wheatgrass is highly variable and grows to 1.5 to 4 feet tall and seed spikes are 3 to 8 inches long. The auricles are pointed and semi-clasping to nearly lacking. Leaves are lax, cauline, flat to in-rolled, 4-6 mm wide, and green to blue in color. Sheath is generally glabrous. Reproductive stems are erect, slender, and sometimes wiry with a wavy rachis. The lemmas have a divergent awn to awn tipped except on the beardless type where awn is lacking.