Annual or short-lived perennial; culms 1.5–3 mm wide, usually unbranched. Leaf blades usually 1–1.5 mm wide when unflattened. Spikelets 3.5–4(–4.5) mm long, green to purplish-green; rachilla extension 1.3–2(–2.5) mm long; lemma (2.7–)3–3.3 mm long, toothed with small setae to 0.7 mm long, back and/or lateral faces glabrous, except for the callus, or with occasional to few hairs; awn arising from 50–60 % of the lemma length from its base, 4.5–6 mm long; dehisced anthers 0.5–0.6(–0.7) mm long. Flowers Nov.–Jan.
VVP. Scattered across the central region of the Volcanic Plain where mostly occurring on drying lake beds, depressions and on the outer flats of salt lakes, where soils are only slightly saline.
Occasionally occurring with L. adamsonii subsp. adamsonii (e.g. Mia Mia Ck, La. Goldsmith, La. Corangamite) whichusually occupyies the more saline areas. Probably less tolerant of waterlogging than the other subspecies of L. adamsonii.
