Tufted perennials, 12-50-(90) cm, strongly coumarin-scented. Leaf-sheath firmly membranous, glabrous or sparsely hairy, especially towards ligule, ± bearded on margins near collar, sometimes with one minute lateral auricle. Ligule 0.6-5 mm, truncate to somewhat tapered, minutely ciliate. Leaf-blade (1)-3.5-18-(25) cm × 2-6.5-(10) mm, glabrous or hairy, ribs smooth or minutely scaberulous, tip acute to acuminate. Culm erect or spreading, simple, internodes glabrous. Panicle 1.5-10-(16) × (0.5)-1-2-(4) cm, cylindric to ± ovate, dense, branches very rarely obvious; rachis glabrous, branches and pedicels short-hairy or very rarely glabrous. Spikelets 7-9.5 mm, green or brownish green, sometimes proliferous. Glumes ± hairy, very rarely glabrous or minutely scabrid, acute to shortly mucronate; lower c. ½ length of upper, 1-nerved, ovate, upper > florets and enclosing them, 3-nerved, ovate-lanceolate. Ø florets: lemma 3-3.5 mm, oblong, firmly membranous, brown and hairy below, hyaline above, apex bifid, with short obtuse lobes; awn of lower floret 2.4-3.8 mm, straight, inserted above midpoint, awn of second floret 6.3-8.5 mm, curved near base, inserted near base of lemma and often slightly projecting beyond upper glumes; palea 0 in both florets. ☿ floret: lemma 1.4-2.2 mm, orbicular, smooth; palea = lemma, narrow-lanceolate; anthers (2.5)-3.5-4.7 mm; caryopsis 1.4-1.9 × 0.5-1 mm. Plate 4E.