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Descriptions

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

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

Dendrocalamus tibeticus

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; pendulous at the tip; 1500–2500 cm long; 120–180 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; 40–45 cm long; distally mealy, or glabrous. Culm-nodes flush with internodes. Lateral branches dendroid. Culm-sheaths 33–40 cm long; 1.1–1.3 times as long as wide; coriaceous; hispid; without auricles. Culm-sheath ligule 2–4 mm high; fimbriate. Culm-sheath blade lanceolate; erect; glabrous on surface, or pubescent. Leaf-sheaths glabrous on surface. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1–1.5 mm long; truncate. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.4–0.6 cm long. Leaf-blades lanceolate; 10–32 cm long; 22–45 mm wide. Leaf-blade venation with 16–26 secondary veins; with obscure cross veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

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

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets. Spikelets oblong, or ovate; laterally compressed; 10–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Lower glume ovate; 7 mm long; chartaceous; 11–155 -veined. Lower glume surface pubescent.

FLORETS Fertile florets increasing in size upwards. Fertile lemma ovate; 6–8 mm long; 4–6 mm wide; chartaceous; without keel. Palea chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliolate.

FLOWER Lodicules absent. Anthers 6; 5–6 mm long; yellow; anther tip pubescent. Stigmas 1; pubescent. Ovary pubescent on apex.

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.