Dinochloa sepang

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 6–30 mm diam.; woody. Culm-internodes terete; with small lumen; 15.3–23 cm long; distally pubescent. Lateral branches dendroid. Branch complement many. Culm-sheaths hispid; hairy at the base; with dark brown hairs; convex at apex; auriculate; with 3 mm high auricles. Culm-sheath ligule 4 mm high. Culm-sheath blade lanceolate; reflexed; 5.4–10.3 cm long. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1–2 mm long. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1–0.4 cm long. Leaf-blades lanceolate; 15–27 cm long; 17–55 mm wide.

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 elliptic; laterally compressed; 3–4 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet. Lower glume orbicular; chartaceous; without keels. Upper glume ovate; 1.1–1.5 mm long; 0.4–0.5 length of adjacent fertile lemma; chartaceous; without keels. Upper glume apex cuspidate.

FLORETS Fertile lemma oblate; 3 mm long; coriaceous; without keel. Lemma apex cuspidate. Palea orbicular; involute; 4 mm long; coriaceous; without keels.

FLOWER Lodicules absent. Anthers 6; 1–2 mm long; red. Stigmas 3. Ovary umbonate.

FRUIT Caryopsis with fleshy pericarp; obovoid; 4–5 mm long.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Widjaja 2006.

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