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 intermedia

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; erect at the tip, or inclined at the tip; 700–1500 cm long; 30–70(–110) mm diam.; woody. Culm-internodes terete; with small lumen; 35–45(–55) cm long; distally mealy. Culm-nodes swollen. Lateral branches dendroid. Branch complement several. Culm-sheaths deciduous but leaving a persistent girdle; 20–30 cm long; 1 times as long as wide; hispid; with yellow hairs, or tawny hairs; concave at apex; without auricles; setose on shoulders. Culm-sheath ligule 2–3 mm high; ciliate. Culm-sheath blade lanceolate; constricted at base; erect, or reflexed; pubescent. Leaves cauline; 5–12 per branch. Leaf-sheaths 5–7 cm long; glabrous on surface. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane; truncate. Collar with external ligule. Leaf-blade base truncate, or cordate; with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 7–15 cm long; 10–25 mm wide. Leaf-blade venation with 10–14 secondary veins. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade apex acuminate; filiform.

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 7–11 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 20–40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pubescent.

GLUMES Glumes several; persistent; shorter than spikelet.

FLORETS Fertile lemma ovate; 7–10 mm long; without keel; 13 -veined. Lemma surface glabrous. Lemma apex cuspidate. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; membranous. Anthers 6; 4.5 mm long; anther tip smooth. Stigmas 3. Ovary with a few apical hairs.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China.

NOTES Bambuseae. Hsueh & Yi 2002.

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