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Descriptions

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

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

Urochondra setulosa

HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 15–90 cm long. Ligule a fringe of hairs. Leaf-blades convolute; 20–30 cm long; 5–8 mm wide; stiff. Leaf-blade surface ribbed. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence a panicle. Peduncle pubescent above.

Panicle spiciform; linear; 4.5–16 cm long; 0.4–0.8 cm wide. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis with rounded ribs; pubescent.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; compressed strongly; 2–3 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; reaching apex of florets, or shorter than spikelet; similar to fertile lemma in texture. Lower glume elliptic; 1.5–2.5 mm long; 0.7–1 length of upper glume; membranous; without keels; 1 -veined. Lower glume primary vein ciliolate. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex obtuse, or acute. Upper glume elliptic; 2–3 mm long; 0.9–1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein ciliolate. Upper glume lateral veins absent. Upper glume margins ciliolate. Upper glume apex obtuse, or acute.

FLORETS Fertile lemma elliptic; 2–3 mm long; membranous; keeled; 1 -veined. Lemma midvein ciliolate. Lemma apex obtuse; mucronate. Palea hyaline. Palea keels eciliate, or ciliolate. Palea apex glabrous, or ciliate.

FLOWER Lodicules absent. Anthers 3; 1–1.5 mm long. Ovary beaked; glabrous.

FRUIT Caryopsis with free soft pericarp; ellipsoid; isodiametric; biconvex; 2 mm long; dark brown; glabrous; apex rostrate. Embryo 0.6 length of caryopsis. Hilum punctiform.

DISTRIBUTION Africa: northeast tropical. Asia-temperate: Arabia. Asia-tropical: India.

NOTES Eragrostideae. CEH.

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