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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 semiscandens

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect, or leaning; 700–1800 cm long; 60–150 mm diam.; woody. Culm-internodes terete; with small lumen; 30–60 cm long; distally pubescent. Lateral branches dendroid. Branch complement many; with 1 branch dominant. Culm-sheaths deciduous; 16–27 cm long; coriaceous; hispid; with dark brown hairs; without auricles. Culm-sheath ligule 1 mm high; entire. Culm-sheath blade ovate; erect; 6–8 cm long; acuminate. Leaves 6–12 per branch. Leaf-sheaths pubescent. Leaf-sheath auricles absent. Ligule an eciliate membrane; 3–5 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 25–35 cm long; 30–45 mm wide. Leaf-blade venation with 20–24 secondary veins. Leaf-blade surface pubescent; sparsely hairy; hairy abaxially. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; 1–3.2 cm long; 2.8–4.5 cm between clusters; 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 4–5 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 10–13 mm long; 4–7.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes several; 1–3 empty glumes; persistent; similar; shorter than spikelet. Lower glume ovate; chartaceous; without keels. Lower glume apex acute. Upper glume ovate; 7 mm long; chartaceous; without keels; 9 -veined. Upper glume apex acute.

FLORETS Fertile florets increasing in size upwards. Fertile lemma ovate; 8.5–9.5 mm long; chartaceous; without keel. Lemma apex acuminate; mucronate. Palea 7.5–8 mm long; chartaceous; 2-keeled but the uppermost without keels.

FLOWER Lodicules absent. Anthers 6; 3.7 mm long; anther tip apiculate. Filaments 7 mm long. Stigmas 1. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China.

NOTES Bambuseae. Hsueh & Li 2002.

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