Dinochloa sipitangensis

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms zigzag; 9 mm diam.; woody. Culm-internodes terete; solid; 25 cm long; smooth. Lateral branches dendroid. Branch complement many; with 1 branch dominant; as thick as stem. Culm-sheaths smooth; glabrous; hairy on margins. Leaf-sheaths pubescent; outer margin hairy. Ligule an eciliate membrane; 1 mm long; lacerate. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 14–15.5 cm long; 13–18 mm wide. Leaf-blade surface pubescent; hairy on both sides. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between branches; 150 cm long overall.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.5–3 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes two; persistent; shorter than spikelet. Lower glume oblong; 1 mm long; 3 -veined. Lower glume apex truncate. Upper glume oblong; 1.5 mm long; 5 -veined. Upper glume apex truncate.

FLORETS Fertile lemma oblong; 2 mm long; coriaceous; without keel; 5 -veined. Lemma apex truncate. Palea involute; 2.5 mm long; coriaceous; 4–6 -veined; without keels.

FLOWER Lodicules absent. Anthers 6; anther tip apiculate. Stigmas 3. Ovary umbonate; glabrous.

FRUIT Caryopsis with fleshy pericarp; orbicular; isodiametric; 7–8 mm long; smooth, or rugose (slightly); glabrous. Endosperm evanescent.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Dransfield 1995.

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