Oryza longistaminata A. Chev. et Roehr.

Morphological characteristics

Perennial, tall (2 m or more), erect, and rhizomatous grass; ligule of lower leaves >15 mm, acute or 2-cleft; panicles open to intermediately open; spikelets 4.5-11.4 mm long and 2-3 mm wide, awned (2-5 cm long); anther 1.5-8.2 mm long.

Chromosome number

2n=2x=24

Genome

AA

Distribution

Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central Africa Republic, Chad, Congo, Côte d’Ivoire, Democratic Republic of Congo, Ethiopia, Gabon, The Gambia, Ghana, Kenya, Madagascar, Malawi, Mali, Martinique, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, Sudan, Tanzania, Uganda, Zambia, and Zimbabwe.


 

Habitat: Found in swampy areas, at the edges of lakes or ponds, streams or river sides, in irrigation canals, in and at the edges of rice fields. Grows in water up to 4 m deep, but usually 1 m or less, in open savanna or openings in rain or gallery forests. Prefers black cotton soils, Kalahari sand, and alluvium. Grows in full sunlight.


Demonstrating the size of O. longistaminata panicle, Kenya


A large population of O. longistaminata covering more than 4 hectares in an abandoned rice field in Kwale, Kenya


A red-awned O. longistaminata in Garsen, Kenya


O. longistaminata growing on the banks of river Tana, Kenya


Habitat, in GRC’s screen house, Philippines