Lachnagrostis nesomytica

HABIT Annual, or perennial; short-lived; caespitose; clumped loosely. Culms geniculately ascending; 16–46 cm long. Culm-internodes distally glabrous. Ligule an eciliate membrane; 4–5 mm long. Leaf-blades 10–15 cm long; 1–1.5 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; effuse; 10–20 cm long; bearing few spikelets. Primary panicle branches spreading. Panicle branches stiff; straight.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels clavate; unequal; 4–24 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 2–2.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus sparsely hairy.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 2–2.8 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface smooth, or asperulous. Lower glume margins ciliolate. Lower glume apex acute. Upper glume lanceolate; 2–2.8 mm long; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume surface smooth, or asperulous. Upper glume margins ciliolate. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 1.5–1.8 mm long; hyaline; without keel; 5 -veined. Lemma surface glabrous, or pilose. Lemma apex dentate; 4 -fid; truncate; muticous. Palea hyaline. Palea apex entire, or dentate; 2 -fid. Rhachilla extension 0.6–1.4 mm long; glabrous, or pilose.

FLOWER Anthers 3; 0.5–0.6 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Brown 2008.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.