Glyceria australis C.E.Hubb.

Rhizomatous and caespitose perennial, often rooting at lower nodes. Culms ascending to erect, 85–150 (–200) cm high. Leaves: sheaths prominently cross-veined; ligule 4.3–8.5 mm long, acute to truncate, soon shredding; blade 13–50 cm long, to 8 mm wide, often prominently cross-veined, adaxially minutely papillose to scaberulous. Inflorescences slender panicles or sometimes reduced and racemose, often interrupted, 17–50 cm long. Spikelets oblong, 20–38 mm long, with 5–14 (–20) bisexual florets; rachilla glabrous. Glumes narrowly ovate, obtuse to acute, 1-nerved; lower glume (3.5–) 4.3–5.1 mm long; upper glume (5–) 5.5–8.1 mm long. Lemma narrowly oblong to narrowly ovate, (6–) 7.9–10 (–11) mm long, acute or tapered to a narrowly obtuse usually apiculate apex, entire, dorsally rounded, smooth or scaberulous. Palea shortly exceeding lemma, bifid to bidentate, smooth and glabrous. Anthers 2.5–3 mm long. Caryopsis dorsiventrally compressed, not grooved.

It is a temperate plant. It grows in or near freshwater creeks and swamps. It is hardy to frost. Tasmanian Herbarium.

Plants can be grown by division.