Deer Grass, Muhlenbergia rigens. Native from California to Texas and south into Mexico. Bright green leaves form a dense, tight clump to 4 ft. high and wide. Slender yellow or purplish flower spikes in autumn are erect at first, then leaning; rise 2 ft. above the leaves.
It's easy to grow, looks exotic, and will thrive in the shade. Palm sedge is a beautiful perennial with glossy green, grasslike leaves that grows 2-3 feet tall. An excellent shade-loving groundcover, palm sedge will flourish in damp soil, even clay.