Dinochloa andamanica

Habit
Perennial. Rhizomes short; pachymorph. Culms prostrate, or scandent; zigzag; 2000-3000 cm long; 25 mm diam.; woody; rooting from lower nodes. Culm-internodes terete; thin-walled; 23-46 cm long. Culm-nodes swollen. Lateral branches dendroid. Branch complement several; with 1 branch dominant; as thick as stem. Culm-sheaths deciduous; 0.25 length of internode. Culm-sheath blade triangular; as wide as sheath at base. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 23-30 cm long; 50-75 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 14-18 secondary veins; with distinct cross veins. Leaf-blade surface smooth. Leaf-blade margins scabrous. Leaf-blade apex attenuate; filiform.
Inflorescences
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 branches. Fertile spikelets sessile.
Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Glume
Glumes one the lower absent or obscure; persistent; shorter than spikelet. Upper glume ovate; chartaceous; without keels; 5-7 -veined. Upper glume apex obtuse.
Florets
Fertile lemma ovate; 1.5-2 mm long; coriaceous; without keel; 5-7 -veined. Lemma apex obtuse. Palea orbicular; involute; coriaceous; without keels.
Flowers
Lodicules absent. Anthers 6. Stigmas 2.
Fruits
Caryopsis with fleshy pericarp. Endosperm evanescent.
Distribution
Asia-tropical: Indo-China.




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