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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 peculiaris

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; pendulous at the tip; 1300–1800 cm long; 100–150 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; with small lumen; 36–43 cm long. Lateral branches dendroid. Branch complement many; with 1 branch dominant. Culm-sheaths tardily deciduous, or deciduous; coriaceous; hispid; with white hairs, or red hairs; without auricles. Culm-sheath ligule 6–10 mm high; dentate. Culm-sheath blade ovate; spreading; acuminate. Leaves 8–15 per branch. Leaf-sheaths deciduous; pilose; outer margin hairy. Ligule an eciliate membrane; 1 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 28–40 cm long; 30–55 mm wide. Leaf-blade venation with 18–24 secondary veins. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; 1.8–3.4 cm between clusters; pubescent on internodes; 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; 10–12 mm long; 5–8 mm wide; 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; chartaceous; without keels. Lower glume apex acute. Upper glume ovate; chartaceous; without keels. Upper glume apex acute.

FLORETS Fertile florets increasing in size upwards. Fertile lemma ovate; 7–11 mm long; 7–8 mm wide; chartaceous; without keel. Lemma apex acuminate; mucronate. Palea 6–8 mm long; chartaceous; 2-keeled but the uppermost without keels.

FLOWER Lodicules absent. Anthers 6; 3–3.5 mm long; yellow. Stigmas 1.

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.