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

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

Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

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

cereal A cereal is any Poaceae, grass cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, Cereal germ, germ, and bran. Cereal Grain, grain crops are grown in greater quantit ...

crop

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 ...

. 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 ''Suddia'' is a genus of plants in the grass family. The only known species is ''Suddia sagittifolia'', which is native to South Sudan in central Africa Africa is the world's second-largest and second-most populous continent, after Asi ...

'' (thought likely to be in the tribe

Phyllorachideae Phyllorachideae is a tribe in the grass family, comprising two genera. It may be better placed as a subtribe of Oryzeae Oryzeae is a tribe of flowering plants in the true grass family, Poaceae. It contains 11 genera, including both cultivated ...

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

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

s within the subfamily:

References

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