Oryzoideae ( syn. Ehrhartoideae) is a subfamily of the true grass

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Poaceae. It has around 120 species in 19 genera, notably including the major cereal crop

rice Rice is the seed of the grass species '' Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima'' (African rice). The name wild rice is usually used for species of the genera '' Zizania'' and '' Porteresia'', both wild and domesticat ...

. Within the grasses, this subfamily is one of three belonging to the species-rich BOP clade, which all use C₃ photosynthesis; it is the basal lineage of the clade. It contains four tribes and one genus of unclear position (

incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertain ...

): '' Suddia'' (thought likely to be in the tribe Phyllorachideae).

Phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

analyses have resolved the branching order of these clades within the subfamily:

References

Poaceae subfamilies Taxa named by Carl Sigismund Kunth {{Poaceae-stub