Dendrocalamus yentuensis

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 2000–2600 cm long; 100–120 mm diam.; woody. Culm-internodes terete. Lateral branches dendroid. Culm-sheaths 35–37 cm long; 1.5 times as long as wide. Leaf-sheaths outer margin hairy. Ligule an eciliate membrane; 1 mm long. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.2–0.3 cm long. Leaf-blades oblong; 24–26 cm long; 35–50 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3–6 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 10–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.

GLUMES Glumes several; 2–4 empty glumes; persistent; similar; shorter than spikelet. Upper glume ovate; 3–5 mm long. Upper glume apex acute.

FLORETS Fertile lemma ovate; 7–8.5 mm long; chartaceous; without keel. Lemma surface pilose. Lemma margins ciliate. Lemma apex acute; mucronate. Palea chartaceous; 2-keeled but the uppermost without keels. Palea surface pilose. Palea apex dentate; 2 -fid.

FLOWER Anthers 6; 6–7 mm long. Stigmas 1. Ovary umbonate.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Bambuseae. Nguyen 1996.

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