stems cæspitose, erect, 12–18 in. high and upwards, slender, terete, simple or sparingly branched; branches erect, olivaceous, coarsely tubercled; leaf-sheaths 1/2– 3/4 in. long, tightly convolute, coriaceous, striate, membranous above, prolonged at the apex into a slender, foliaceous mucro; male spikelets 1–3, 1/2 in. long and upwards, erect, oblong-obtuse, ultimately flattened; spathe oblong, mucronate, shorter than the spikelet; bracts loosely imbricate, spreading, subcoriaceous, oblong, cuspidate; flowers oblong, obtuse; perianth-segments narrow, blunt, in the female plant somewhat broader than in the male; outer lateral conduplicate, villous-carinate; inner 3 hyaline; staminodes 3; ovary rounded, subtrigonous; styles 3. null