Lachnagrostis semibarbata (Trin.) A.J.Br.

Muelleria 38: 23 (2019)

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Tufted glabrous annual or short-lived perennial, culms ascending to erect, to c. 60 cm high. Leaf-blades folded, to 20 cm long and 1(–2) mm wide; ligules obtuse to acute, 1–8 mm long. Inflorescence a loose, open panicle, to 30 cm long, its base often enclosed by the upper leaf-sheath until maturity, then divaricately branched and breaking off below the lower branches. Spikelets 4–7.5 mm long (excluding awn), usually purplish (green when immature); glumes narrowly acuminate, the lower usually slightly longer, keeled toward the apex, smooth or scabrous along the keel which is sometimes drawn out into a seta to 0.4 mm long; lemma 3–5.5 mm long, 4-toothed at apex, at least 2 of the teeth developed into fine setae to 1.5 mm long, awned from near the middle; awn bent, exceeding spikelet by 2–7 mm; palea c. three-quarters as long as lemma; rachilla bristle plumose; anthers c. 1.5 mm long.

There are two varieties, both occurring in Victoria, mostly associated with slightly to markedly saline sites.

Lachnagrostis semibarbata is an earlier replacement name for Lachnagrostis punicea.

Created by: Neville Walsh, 2016-03-01
Updated by: Val Stajsic, 2019-10-17
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
Higher taxa