Puccinellia acroxantha C.A.Sm. & C.E.Hubb.

Loosely tufted perennial 100-600 mm high; often glaucous; basal sheath white, dull, shorter than 50 mm, usually not overlapping; culm 2-noded. Leaf blade 50-200 x 1-3 mm. Inflorescence ± linear, 100-300 mm x 5-15 mm in diameter contracted or very slightly open, branches very slender, usually erect, often exserted from upper sheath; spikelets mostly to the base of branches and their own length apart but not overlapping for more than half their length. Spikelet 3-5 x to 1.5 mm; glumes obtuse to subacute; lemma 2.0-2.8 mm long, obtuse to rounded, glabrous or nerves hairy near base, upper margin broadly membranous, nerves inconspicuous; palea keels ciliate, margins glabrous; anthers 0.5-0.8 mm long.