Loose, bright green perennial tufts, not rhizomatous, to 50 cm tall; new shoots extravaginal; laminae persistent. Sheaths light green to light brown, membranous, smooth, or lower sheaths sparsely scabrous, finely nerved; ligule 0.4-0.5- (0.8) mm long, with fringe of minute hairs along truncate top, minutely scabrous abaxially; lamina 5-12-(15) cm × 1.5-2 mm, weak, flat, abaxially smooth and glabrous, adaxially minutely ciliatescabrous, often densely scabrous just above ligule, margins minutely scabrous, tip finely to abruptly acute. Culms 20-30-(40) cm tall, erect or spreading, terete, smooth. Panicle 5-20 cm long, lax and open, branchlets few to many, filiform, finely scabrous, naked below with few small spikelets near tips. Spikelets 3-4.5 mm long, 2-4-flowered, light green. Glumes equal or subequal, acute to acuminate, 3-nerved, midnerve finely scabrous above, margins glabrous; lower glume 2.2-3 mm long, narrow-lanceolate, upper (2.2)-2.5-3.5 mm long, lanceolate to ovate-lanceolate. Lemma c. 3.0 mm long, finely 5-nerved but inner lateral nerves not always distinct, narrow oblong-lanceolate, midnerve and outer lateral nerves with fine hairs to ½ length, margins, midnerve and internerves minutely scabrous near subacute tip. Palea c. = lemma, smooth between densely, minutely scabrous keels. Lodicules c. 0.4 mm long. Callus with a small tuft of long soft hairs or a few wispy hairs. Rachilla c. 1 mm long, softly short-ciliate, projection usually twice as long. Anthers c. 1.5 mm long. Caryopsis 1.2-1.3 × 0.3-0.4 mm.

Loose, bright green perennial tufts, to 50 cm; branching extravaginal; leaf-blades persistent. Leaf-sheath light green to light brown, membranous, smooth, or lower sheaths sparsely scabrid, striate. Ligule 0.4-0.5-(0.8) mm, truncate, minutely ciliate, abaxially minutely scabrid. Leaf-blade 5-12-(15) cm × 1.5-2 mm, weak, flat, abaxially glabrous, adaxially minutely pubescent-scabrid, often densely scabrid just above ligule; margins minutely scabrid, tip finely to abruptly acute. Culm 20-30-(40) cm, erect or spreading, terete, internodes glabrous. Panicle 5-20 cm, lax and open; branches few to many, filiform, finely scabrid, naked below with few small spikelets near tips. Spikelets 3-4.5 mm, 2-4-flowered, light green. Glumes equal or subequal, acute to acuminate, 3-nerved, midnerve finely scabrid above; lower 2.2-3 mm, narrow-lanceolate, upper (2.2)-2.5-3.5 mm, lanceolate to ovate-lanceolate; margins glabrous. Lemma c. 3.0 mm, finely 5-nerved but inner lateral nerves not always distinct, narrow oblong-lanceolate, midnerve and outer lateral nerves with fine hairs to ½ length; margins, midnerve and internerves minutely scabrid near subacute tip. Palea ≈ lemma, keels densely, minutely scabrid, interkeel glabrous. Callus with small tuft of long soft hairs or a few wispy hairs. Rachilla c. 1 mm, softly short-ciliate; prolongation usually twice as long. Lodicules c. 0.4 mm. Anthers c. 1.5 mm. Caryopsis 1.2-1.3 × 0.3-0.4 mm.