Morphological characteristics

Perennial and short (usually <1 m) grass with lanceolate and dark green leaves; compact panicles usually without secondary branching; spikelets 5.2-6.4 mm long and 2.4-2.7 mm wide, always awnless, with granulated texture to the lemma and palea; anthers 2.8-3.6 mm long.

Chromosome number

2n=2x=24

Genome

GG

Distribution

Cambodia, China, India, Indonesia, Laos, Myanmar, Nepal, Philippines, Sri Lanka, and Thailand.

Habitat

Found in deciduous forest, bamboo thickets, rarely on grass slopes; on limestone hills or mountains; in damp places beside streams, waterfalls, near water holes, or seasonally dry, sloping land. Grows in sandy, lateritic soils and organic loamy soils. Not found in standing water and usually grows in complete shade.

A close-up of O. granulata panicle

Habitat: forest floor, Nepal

Habitat: forest floor, Thailand

Habitat: shady place under trees, Thailand