Triticum aestivum (common wheat) and Elymus trachycaulus (slender wheatgrass) 

Regreen™ Hybrid Wheatgrass. Erosion control, quick coverage. An annual with over 90% cytoplasmic sterility, developed from crossing wheat with rye. Use as a soil stabilizer and cover crop. Germinates and establishes rapidly but plants do not persist or reseed in successive years. Ideally suited for cost effective erosion control and temporary cover. Quickguard Sterile Triticale does not produce a viable seed unless it is exposed to pollen from other triticales. Excellent choice where short-term cover is desired.