Deyeuxia talariata

HABIT Perennial. Rhizomes short. Culms erect; 25–110 cm long. Leaf-sheaths smooth, or scaberulous; glabrous on surface; outer margin glabrous, or hairy. Ligule an eciliate membrane; 1.5–3 mm long; truncate. Leaf-blades conduplicate; 6–40 cm long; 1.5–3 mm wide; stiff. Leaf-blade surface scabrous; glabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; continuous, or interrupted; 4–11 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 3.6–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.66 length of lemma.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3.6–5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 3.6–5 mm long; chartaceous; without keel; 5 -veined. Lemma surface scaberulous. Lemma apex muticous, or mucronate, or awned; 1 -awned. Principal lemma awn apical, or subapical; 0.3–0.8 mm long overall. Palea 0.9 length of lemma. Rhachilla extension 1–1.5 mm long; villous.

FLOWER Lodicules 2. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Walsh 1997.

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