Elymus condensatus, Presl. Giant Rye-grass. The largest of the native rye-grasses, growing to the height of 5-10 ft.: culms in dense tufts, stout: spikes 6-12 in. long, very variable, compact or interrupted, bearing branching clusters of spikelets at each joint; glumes subulate; lemmas awnless or mucronate. Rocky Mt. regions and the Pacific slope.—Cult, as an ornamental. A Pacific Coast form has large branched heads.