Morphological characteristics

Perennial and short (<1 m) grass with lanceolate and dark green leaves; panicles compact without secondary branching; spikelets 6.5-8.5 mm long and 2.2.5 mm wide, awnless, with granulate texture on the lemma and palea; anthers 3-4 mm long.

Chromosome number

2n=2x=24

Genome

GG

Distribution

Indonesia, Malaysia, Philippines, and Thailand.

Habitat

Found in primary dipterocarp forest, well-developed secondary forests, in damp places by streams or dry riverbanks; often on sloping areas of gneus or ultra basic hills. Grows in gray sand, alluvium, or laterite soils. Not found in standing water and usually grows in full shade.

Habitat: stream side, Philippines

Spikelets

Plants growing in natural habitat in Papua New Guinea

Habitat: in dark forest, Malaysia

A cluster of O. meyeriana vigorously growing among bamboo thickets in Aborlan, Palawan, Philippines