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Descriptions

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

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

Bambusa teres

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 2000 cm long; 75 mm diam.; woody; without nodal roots. Culm-internodes terete; with small lumen; 50 cm long; dark green. Lateral branches dendroid. Culm-sheaths 20–25 cm long; 1 times as long as wide; glabrous; convex at apex; auriculate; setose on shoulders. Culm-sheath ligule 2.5 mm high. Culm-sheath blade triangular; 10–15 cm long; pubescent; acute. Leaves cauline. Leaf-sheaths striately veined; glabrous on surface, or puberulous. Leaf-sheath auricles falcate. Ligule an eciliate membrane; truncate. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.2 cm long. Leaf-blades lanceolate, or oblong; 30–35 cm long; 30–45 mm wide; glandular. Leaf-blade midrib conspicuous. Leaf-blade venation with 20–32 secondary veins. Leaf-blade surface puberulous; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate; antrorsely scabrous.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

FERTILE SPIKELETS Spikelets comprising 5–6 fertile florets; with diminished florets at the apex. Spikelets lanceolate; subterete; 30–50 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; clavate; pubescent; hairy at tip.

GLUMES Glumes several; 1–2 empty glumes. Upper glume ovate. Upper glume mucronate.

FLORETS Fertile lemma lanceolate, or ovate; 8 mm long; without keel. Lemma apex acute. Palea 7–8 -veined. Palea keels scabrous; ciliate. Palea apex undifferentiated, or ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; membranous; veined; ciliate. Anthers 6; anther tip penicillate. Stigmas 3; pubescent. Ovary umbonate; pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Bambuseae. Gamble 1995.

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