Dendrocalamus detinens

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 2000–3000 cm long; woody. Culm-internodes terete; 60 cm long; distally mealy, or glabrous. Lateral branches dendroid. Culm-sheaths deciduous; 15 cm long. Leaf-sheaths striately veined; glabrous on surface. Ligule an eciliate membrane; 3–5 mm long; glabrous on abaxial surface; truncate. Leaf-blade base cuneate; with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or oblong; 20–30 cm long; 40–60 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade venation with 18–20 secondary veins. Leaf-blade surface scaberulous; rough abaxially; 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 1–2 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 7–8 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Upper glume lanceolate; 4–6 mm long; chartaceous; 9–15 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 5–7 mm long; chartaceous; without keel. Lemma apex acuminate. Palea 7 mm long; chartaceous; 2 -veined; 2-keeled but the uppermost without keels. Palea surface puberulous; hairy on back and on margins. Apical sterile florets barren.

FLOWER Lodicules 2, or 3; ciliate. Anthers 6; 4 mm long. Stigmas 1. Ovary umbonate; pubescent on apex.

FRUIT Caryopsis with adherent pericarp; oblong; 6 mm long; hairy at apex.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Bambuseae. Gr Burma 1997.

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