Dendrocalamus hirtellus

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; drooping at the tip; 1000–1500 cm long; woody. Culm-internodes terete; distally pruinose. Lateral branches dendroid. Culm-sheaths deciduous; yellow and green; glabrous, or pubescent; with tawny hairs; auriculate; with 3 mm high auricles; setose on shoulders; shoulders with straight hairs; shoulders with 20–25 mm long hairs. Culm-sheath ligule dentate. Culm-sheath blade narrowly ovate to ovate; 18 cm long; 25 mm wide; acuminate. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath oral hairs setose; 10–15 mm long. Ligule an eciliate membrane; 1–2 mm long; erose. Leaf-blade base cuneate, or broadly rounded; with a brief petiole-like connection to sheath; petiole 1 cm long. Leaf-blades lanceolate; 20–40 cm long; 30–60 mm wide. Leaf-blade surface pubescent; densely hairy; hairy abaxially. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; 2.5 cm long; 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; without rhachilla extension. Spikelets lanceolate; laterally compressed; 8–9 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes several; 2 empty glumes; persistent; similar; shorter than spikelet. Upper glume 7 mm long.

FLORETS Fertile lemma ovate; 7.5 mm long; chartaceous; without keel. Lemma apex acuminate. Palea chartaceous; 4–7 -veined; without keels, or 2-keeled but the uppermost without keels. Palea keels eciliate.

FLOWER Lodicules absent. Anthers 6; 4 mm long; anther tip smooth. Filaments free, or united in a tube. Stigmas 1; pubescent. Ovary umbonate; pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Holttum 1995.

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