Hermaphroditic. Perennials; tufted, without horizontal or downward tending cataphyllous shoots, tufts somewhat dense to loose, tall, green; tillers extravaginal, cataphyllous. Culms 50--120 cm, stout, compressed. culm internodes smooth, glabrous; nodes 3 per culm. Leaves; leaf sheaths distinctly compressed, keels winged, wing 0.6--0.8 mm deep, basal most sheaths, bulb absent, smooth or scabrous, glabrous, keel scabrous, bases of basal sheaths glabrous; flag-leaf sheath 15--20 cm long, retrorsely scabrous, margins fused 50--75% the length, 2--3 x longer than its blade; throats and collars, lightly scabrous, glabrous; ligules 1--2 mm long, smooth or lightly scabrous, apices truncate, lightly asperous; of sterile shoots, 0.2--0.5 mm long, scabrous; uppermost blades 2--3 x shorter than the sheath (4) 6--15 mm wide, flat or strongly folded at the base, abaxial surfaces smooth, margins densely scabrous, adaxially smooth or sparsely finely scabrous, broadly and abruptly prow-tipped; mid-culm blades the longest, longer than their sheaths, the upper one much shorter than its sheath, sterile shoot blades to 25 cm long, 3--7mm wide. Panicles 10--20 cm, ovoid to pyramidal, open, or loosely contracted, spikelets generally 100 or more, proximal internodes 3--5.5 cm long; axis with 3--5 branches per node; primary branches ascending to spreading, terete at base, distally angled, angles moderately to densely scabrous. lateral pedicels mostly 1--2 mm long; longest branches 3--6 cm, with 4--18 spikelets in the distal 1/2. Spikelets 4--7.5 mm long, lanceolate, laterally compressed, not bulbiferous, green, or partially violaceous; florets 2--5; rachilla internodes about 0.5--0.8 mm long, scabrous, glabrous; glumes unequal, distinctly keeled, keels scabrous, apices sharply acute; lower glumes 2.5 mm long, 1--3-veined, narrow; upper glumes 3--3.2 mm long, 3-veined, 2 x broader than lower one; calluses glabrous; lemmas 3.5--4.5 mm long, 5-veined, narrowly lanceolate, green to violaceous, distinctly keeled, glabrous throughout, keels scabrous, marginal veins and surfaces sparely scabrous, intermediate veins prominent, margins proximally inrolled to distally angled inward, very narrowly scarious, edges sparsely scabrid, apices acute; paleas moderately scabrous, glabrous over 2/3--3/4 the keels. Flowers bisexual; lodicules 0.5 mm long, broadly oblanceolate, lobe not seen; anthers 1.5--3 mm long; caryopses 1.9--2.6 mm long, elliptical-fusiform in side-view, slightly laterally compressed, dark-brown, sulcus narrow, shallow, hilum 0.5 mm long, elliptical, grain adherent to the palea. 2n = 14. Genotype: Hh