2n = 98

Rather lax, perennial tufts, 9-35 cm tall; innovations extravaginal. Leaf-sheaths firmly membranous, inconspicuously nerved, glabrous, light green to dull brown; ligule 1-2.5 mm, truncate, erose or denticulate, abaxially sparsely, finely scabrous; leafblades 3-10-(15) cm × 1-2 mm, flat or folded, abaxially smooth, adaxially sparsely, finely scabrous on nerves, margins minutely, sparsely, scabrous, tip obtuse. Culms 4-20 cm tall, often enclosed in uppermost leaf sheath, finely scabrous below nodes and below panicle. Panicle 3-14 × 1.5-8 cm, rather contracted at first, later lax; branchlets filiform, finely scabrous, with rather few spikelets at tips; main rachis finely scabrous. Spikelets (2.5)-3-3.5- (4) mm, pale green or tinged faint purple. Glumes ± equal, elliptic-lanceolate, midnerve and margins scabrous in upper ¼, occasionally in upper ½ or 2/3 Lemma (excluding awn) 2-2.5 mm, c. ¾ length of glumes, with scattered soft hairs, very rarely glabrous, ovate-oblong, truncate, lateral nerves not, or scarcely, excurrent, midnerve produced to a mucro, or sometimes a straight awn, to 2.5 mm, from just below lemma tip. Palea ½-2/3 length of lemma, shallowly bifid, keels c. 0.3 mm apart, very faint. Callus hairs conspicuous, to 1 mm, to ½ length lemma. Lodicules 0.5-0.8 mm, lanceolate, acute. Rachilla c. 0.2 mm, tipped by hairs to c. 0.8 mm. Anthers 0.7-1.3 mm. Caryopsis 1.2-1.8 × 0.5- 0.6 mm. Endemic.

Gramen perenne, laxe caespitosum; innovationes extravaginales. Folia paulo angusta breviaque, plana vel plicata. Culmus folii supremi vagina saepe inclusus. Panicula ad maturitatem laxa, ramulis spiculas paucas apice gerentibus. Lemma hyalinum, pilis sparsis praeditum; arista minuta vel brevis, recta, juxta lemmatis apicem oriens. Palea lemmate dimidio vel duabus tertiis partibus brevior. Callus pilis brevibus sed conspicuis ornatus. Rachilla minuta, apice pilis longioribus praedita. L. striatae arista brevi recta accedit, praecipue autem differt antheris multo longioribus; L. lyallii etiam attingit ob amplitudinem antherum, lemmatis paleaeque, sed praesertim differt arista parva, recta, non geniculata.

Rather lax, perennial tufts, 9-35 cm; branching extravaginal. Leaf-sheath firmly membranous, inconspicuously ribbed, glabrous, light green to dull brown. Ligule 1-2.5 mm, truncate, erose or denticulate, abaxially sparsely, finely scabrid. Leaf-blade 3-10-(15) cm × 1-2 mm, flat or folded, abaxially smooth, adaxially sparsely, finely scabrid on ribs; margins minutely, sparsely scabrid, tip obtuse. Culm 4-20 cm, often included within uppermost leaf-sheath, internodes finely scabrid below nodes and below panicle. Panicle 3-14 × 1.5-8 cm, rather contracted at first, later lax; rachis finely scabrid, branches filiform, finely scabrid, tipped by rather few spikelets. Spikelets (2.5)-3-3.5-(4) mm, pale green or tinged faint purple. Glumes ± equal, elliptic-lanceolate, midnerve and margins scabrid in upper ¼, occasionally in upper ½ or ⅔. Lemma 2-2.5 mm, c. ¾ length of glumes, with scattered soft hairs, very rarely glabrous, ovate-oblong, truncate, lateral nerves not, or scarcely, excurrent, midnerve produced to a mucro, or sometimes a straight subapical awn, to 2.5 mm. Palea ½-⅔ length of lemma, apex shallowly bifid, keels c. 0.3 mm apart, very faint. Callus hairs conspicuous, to 1 mm, to ½ length of lemma. Rachilla prolongation c. 0.2 mm, tipped by hairs to c. 0.8 mm. Lodicules 0.5-0.8 mm, lanceolate, acute. Anthers 0.7-1.3 mm. Caryopsis 1.2-1.8 × 0.5-0.6 mm.