Dendrocalamus buar

HABIT Perennial; caespitose; clumped densely. Rhizomes short; pachymorph. Culms leaning; pendulous at the tip; 1500–2000 cm long; 60–100 mm diam.; woody. Culm-internodes terete; hollow; 30–50 cm long; distally pruinose, or pubescent. Lateral branches dendroid; arising from mid culm. Branch complement one; with 1 branch dominant. Culm-sheaths deciduous; 17–20.2 cm long; hispid; with white hairs, or tawny hairs; auriculate; with 1–3 mm high auricles; setose on shoulders; shoulders with 4–15 mm long hairs. Culm-sheath ligule 7–19 mm high; ciliate. Culm-sheath blade triangular; narrower than sheath; erect, or reflexed; 9–21 cm long; 12–28 mm wide; glabrous on surface; acuminate. Leaf-sheath oral hairs scanty; 1–2 mm long. Leaf-sheath auricles erect; 1 mm long. Ligule an eciliate membrane; 1 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 18–29 cm long; 13–27 mm wide. 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 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 6–9 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes one the lower absent or obscure; persistent; shorter than spikelet. Upper glume ovate; 5 mm long.

FLORETS Fertile lemma ovate; 6 mm long; chartaceous; without keel. Lemma surface glabrous. Lemma apex acuminate; mucronate. Palea 7 mm long; chartaceous; without keels.

FLOWER Lodicules absent. Anthers 6; yellow. Stigmas 1; pubescent. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Widjaja 2002.

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