Bromus sitchensis

Bromus sitchenis, the Alaska brome,^[1] is a perennial grass native to the North Pacific coast of North America, in woods and banks from Alaska to Oregon. It can grow up to 1.8 m tall, but is often shorter. Leaf blades are elongate, 7–12 mm wide, and as much as 35 cm long. Spikelets 2.5 to 3.5 cm long with between 6 and 12 flowers, awn is 5 to 10 mm long.^[2]

The grass has winter dormancy, and is intolerant of aluminum in the soil. There is some utility as a forage crop in cooler, wetter regions.^[3]

The species appears to have been naturalized in Belgium as well as New Zealand.^[4]