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Descriptions

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

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

Neurachne alopecuroides

HABIT Perennial; caespitose. Rhizomes short. Butt sheaths pilose. Culms erect; 20–60 cm long; 2–4 -noded. Culm-nodes bearded. Leaf-sheaths smooth; glabrous on surface; outer margin glabrous. Ligule a fringe of hairs; 0.4–0.8 mm long. Collar glabrous. Leaf-blades flat, or involute; 4–16 cm long; 1–3 mm wide; stiff. Leaf-blade midrib indistinct. Leaf-blade surface smooth; glabrous, or pilose. Leaf-blade margins smooth.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; oblong, or ovate; 1–2.5 cm long. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis with rounded ribs; pubescent.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.1–0.4 mm long; pubescent; tip discoid.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 8–12 mm long; falling entire. Spikelet callus bearded; base obtuse.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 6–11 mm long; 0.75–0.9 length of spikelet; chartaceous, or cartilaginous; without keels; 3–5 -veined. Lower glume lateral veins ribbed. Lower glume surface pilose. Lower glume apex acuminate. Upper glume lanceolate; 8–12 mm long; 1 length of spikelet; chartaceous, or cartilaginous; with membranous margins; 9–11 -veined. Upper glume lateral veins ribbed. Upper glume surface setose; hairy below. Upper glume margins ciliate. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1–3 mm long.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic, or oblong; 5.5–7 mm long; 0.6–0.7 length of spikelet; chartaceous; 7 -veined; pilose; ciliate on margins; acute. Fertile lemma elliptic; 4.9–6.8 mm long; hyaline; without keel. Lemma apex acute. Palea hyaline; without keels.

FLOWER Anthers 3; 1.9–3.5 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Paniceae. Webster.

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