Amazon wild rice refers to either of the two native (endemic) species of

rice Rice is the seed of the grass species ''Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima ''Oryza glaberrima'', commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown i ...

(Oryza) found in the Amazon region of South America and adjacent tropical areas, '' Oryza glumaepatula'' and ''

Oryza latifolia ''Oryza latifolia'', the broadleaf rice, is a widespread species of grass (family Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the ce ...

''. It also can refer to the cultivated form ''Oryza sp.'' (unnamed rice species) which was domesticated from one or both of the wild forms some 4,000 years ago by the indigenous people of the Amazon region."Evidence for mid-Holocene rice domestication in the Americas", Hilbert et al, ''Nature Ecology & Evolution'' (2017), doi:10.1038/s41559-017-0322-4, Published online: 9 October 2017
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References

{{reflist A Crops originating from South America Grasses of South America Tropical agriculture