Eragrostis lacunaria F.Muell.

Annuals or short-lived perennials. Culms erect, 12–60 cm high, wiry. Leaves: ligule c. 0.5 mm long; blade convolute, filiform. Panicles open, 4–24 cm long, 2–12 cm wide. Spikelets pedicellate, 5–23 mm long, 0.7–1.5 mm wide, biconvex or terete, linear, sometimes cleistogamous; rachilla flexuose; florets 9–43, closely overlapping. Glumes ±equal or the upper larger, ovate or the lower glume linear-lanceolate, 0.5–1.1 mm long, scarious or cartilaginous, deciduous. Lemma elliptic to almost orbicular, 1–1.5 mm long, carinate, cartilaginous, 3-nerved, often glossy and purple. Palea: body spathulate or obovate, scaberulous near apex; keels scaberulous in upper c. half. Anthers 0.1–0.2 mm long. Grain laterally compressed or 3–4-angled, usually concave or grooved, 0.5–0.7 mm long, 0.3–0.4 mm thick, glossy.

Grows ontablelands and low hilly country in deep, red or brown, often alluvial loamsand in skeletal sands on rocky sandstone, quartzite, calcrete and granitebreakaways.