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.

Bambusa odashimae

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 1000–2000 cm long; 40–120 mm diam.; woody; without nodal roots. Culm-internodes terete; with small lumen; 15–50 cm long; mid-green; distally glabrous. Culm-nodes swollen; pubescent. Lateral branches dendroid. Bud complement 1. Branch complement several; in a clump; thinner than stem. Culm-sheaths deciduous; coriaceous; pubescent; hairy on margins. Culm-sheath ligule 1–5 mm high. Culm-sheath blade triangular; pubescent (at base). Leaves 9–13 per branch. Leaf-sheaths 4.5–15 cm long; glabrous on surface. Leaf-sheath oral hairs setose; dark. Ligule an eciliate membrane; obtuse. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate, or oblong; 10–33 cm long; 25–45 mm wide. Leaf-blade venation with 12–20 secondary veins. Leaf-blade surface pubescent; densely hairy; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

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

FERTILE SPIKELETS Spikelets comprising 4–12 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 30–37 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.

GLUMES Glumes two; persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; 6–10 mm long. Lower glume surface pubescent. Lower glume apex acute. Upper glume ovate; 6–10 mm long. Upper glume surface pubescent. Upper glume apex acute.

FLORETS Fertile lemma ovate; 14 mm long; 10 mm wide; without keel; 25 -veined. Lemma margins ciliate. Lemma apex acuminate. Palea oblong; 10 mm long; 10–12 -veined. Palea keels ciliolate. Palea surface pubescent; hairy on margins. Palea apex acute. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; membranous; ciliate. Anthers 6; 6 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Bambuseae. Lin. 2002.

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