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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 latiflorus

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 150 mm diam.; woody. Culm-internodes terete; hollow; distally glabrous. Lateral branches dendroid. Culm-sheaths 25–30 cm long; 1 times as long as wide; brown; hispid; with appressed hairs; with black hairs. Culm-sheath ligule 5 mm high; dentate. Leaf-sheaths glabrous on surface, or hirsute; outer margin hairy. Ligule an eciliate membrane; obtuse, or acute. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 18–25 cm long; 30–75 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 12–18 secondary veins; with distinct cross veins. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; lax; 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 6–8 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 15–20 mm long; 10–12 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; chartaceous; without keels. Lower glume margins ciliate. Lower glume apex acute. Upper glume ovate; 5 mm long; chartaceous; without keels. Upper glume margins ciliate. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; 10 mm long; chartaceous; without keel. Lemma lateral veins with cross-veins. Lemma surface pubescent. Lemma margins ciliate. Lemma apex acute. Palea chartaceous; 5 -veined; 2-keeled but the uppermost without keels. Palea keels ciliate.

FLOWER Lodicules absent. Anthers 6; anther tip apiculate and pubescent. Filaments united in a tube. Stigmas 1–2; plumose. Ovary umbonate; pubescent all over.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China and eastern Asia. Asia-tropical: Indo-China.

NOTES Bambuseae. Gamble 1996.

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