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Descriptions

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

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

Kuruna debilis

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; pendulous at the tip; 300–450 cm long; 5–10 mm diam.; woody. Culm-internodes terete; hollow; distally glabrous. Lateral branches dendroid. Bud complement 1. Branch complement three; in a horizontal line; subtended by a bare patch above the node; with 1 branch dominant; thinner than stem. Culm-sheaths deciduous; yellow, or green, or purple; pubescent; without auricles. Culm-sheath ligule ciliolate. Culm-sheath blade lanceolate; deciduous; reflexed; 3–4 cm long; pubescent (at base). Leaves 7–10 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane. Leaf-blades linear, or lanceolate; 4–8 cm long; 3–6 mm wide; light green and glaucous; discolorous with last colour beneath. Leaf-blade midrib prominent beneath. Leaf-blade venation without cross veins. Leaf-blade surface pubescent; hairy abaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 4–6 cm long; 2–3 cm wide. Primary panicle branches ascending, or spreading. Panicle branches glabrous; with prominent pulvini.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 3–5 mm long; glabrous.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 10–15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes flattened; 4–6 mm long; glabrous, or sparsely hairy; hairy at tip.

GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 4–5.5 mm long; chartaceous; without keels; 7 -veined. Lower glume apex acute. Upper glume ovate; 5.4–6.8 mm long; chartaceous; without keels; 7 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 7–10.2 mm long; chartaceous; without keel; 7 -veined. Lemma apex acute. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 2 mm long; ciliate. Anthers 3; 5 mm long; yellow. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION Asia-tropical: India.

NOTES Arundinarieae. Sod & Ellis 1995.

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