Dichelachne robusta

HABIT Perennial; caespitose. Culms erect; 100–170 cm long. Lateral branches lacking. Ligule an eciliate membrane; 4–5 mm long. Leaf-blades 15–30 cm long; 2–5(–8) mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 25–30 cm long; 5–16 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 4.5–5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; 0.4 mm long; pilose. Floret callus hairs 0.8–1.8 mm long.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 3.5–4 mm long; 0.75 length of upper glume; membranous; 1-keeled; keeled above; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4.5–5.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; keeled above; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 4–5 mm long; cartilaginous; keeled; lightly keeled; 5 -veined. Lemma margins involute. Lemma apex awned; 1 -awned. Principal lemma awn subapical; geniculate; 10–13 mm long overall; with a straight or slightly twisted column. Palea 4.4–4.6 mm long.

FLOWER Anthers 3; 1.5–2 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Fl Australia 2010.

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