Oryza glumaepatula Steud.

Morphological characteristics

Perennial, tufted, and scrambling grass with brittle culm near the base of plants; open panicles; spikelets about 6.6-11 mm long and 1.9-2.5 wide, with awns 6-16 cm long; anthers usually 2-5 mm long occupying 3/4 of the spikelets.

Chromosome number

2n=2x=24

Genome

AA

Distribution

Bolivia, Brazil, Colombia, Costa Rica, Cuba, Dominican Republic, French Guiana, Guyana, Honduras, Mexico, Panama, Surinam, and Venezuela.


 

Habitat

Found in swamps and marshes, in open ditches and pools, beside rivers, and near to cultivated rice fields, usually with deep water. Grows in open habitats.

 


O. glumaepatula
plants floating on the Amazon River in Brazil (Akimoto Masahiro, Japan)


O. glumaepatula constructing a floating meadow in the Amazon River (Akimoto Masahiro, Japan)


A natural population of O. glumaepatula near Marajo island, located at the mouth of the River Amazon (Akimoto Masahiro, Japan)


O. glumaepatula
vegetatively propagating many shoots from its nodes, in Costa Rica (Akimoto Masahiro, Japan)