GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Deyeuxia ramosa

HABIT Perennial. Stolons present. Culms rambling; slender; 55–130 cm long; 5–10 -noded. Lateral branches ample; arising from upper culm. Leaves cauline. Leaf-sheaths smooth, or scaberulous; glabrous on surface, or puberulous. Ligule an eciliate membrane; 0.5–1 mm long; truncate. Leaf-blades flat, or involute; 7–16 cm long; 1–3 mm wide. Leaf-blade surface smooth, or scabrous; glabrous, or pilose; sparsely hairy.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 20–95 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.3–2.2(–18) mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 2.5–3(–4) mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.5 mm long.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 0.9–1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 2.5–3(–4) mm long; cartilaginous; without keel; 5–7 -veined. Lemma lateral veins obscure. Lemma apex entire; acute, or acuminate; awned; 1 -awned. Principal lemma awn subapical; straight; 0.5–0.6 mm long overall; not or scarcely exserted from spikelet. Rhachilla extension 1–1.4 mm long; pubescent; with 0.2–0.5 mm long hairs.

FLOWER Anthers 3; 1.1–1.5 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Fl Australia 2010.

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