Deyeuxia affinis

HABIT Perennial; caespitose; clumped loosely. Culms erect; 20–30 cm long. Ligule an eciliate membrane; 1–3 mm long; erose; truncate. Leaf-blades 2–3 mm wide; firm. Leaf-blade surface smooth, or scaberulous; glabrous. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 2–5 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2.8–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.5 length of lemma.

GLUMES Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 2.8–3.5 mm long; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute; muticous, or mucronate. Upper glume lanceolate; 2.8–3.5 mm long; 1.2–1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute; muticous, or mucronate.

FLORETS Fertile lemma lanceolate; 2.3–2.8 mm long; cartilaginous; without keel; 5 -veined. Lemma surface scaberulous; rough above. Lemma apex entire, or erose; acute; awned; 1 -awned. Principal lemma awn dorsal; arising 0.66–0.75 way up back of lemma; curved; 1–2 mm long overall; without a column.

FLOWER Lodicules 2.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Vickery 2001.

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