Deyeuxia breviglumis

HABIT Perennial; caespitose; clumped loosely. Culms erect, or geniculately ascending; slender; 5–54 cm long; 1–3 -noded. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.5–1.4 mm long; truncate, or obtuse. Leaf-blades filiform; involute; 2–9.5 cm long; 0.4–1 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 1.5–13 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.3–3.3 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 1.9–2.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.8–1 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.8–1.2 mm long; 0.4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Fertile lemma lanceolate; 1.9–2.3 mm long; cartilaginous; keeled; 5 -veined. Lemma lateral veins prominent; ribbed. Lemma surface smooth. Lemma apex acute; awned; 1 -awned. Principal lemma awn subapical; straight, or curved; 0.8–1 mm long overall. Rhachilla extension 1.3–1.5 mm long; glabrous.

FLOWER Anthers 3; 0.6–0.7 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Fl Australia 2010.

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