Stixaceae is a family in the plant order

Brassicales The Brassicales (or Cruciales) are an order (biology), order of flowering plants, belonging to the eurosids II group of dicotyledons under the APG II system. One character common to many members of the order is the production of glucosinolate (mu ...

. It is no longer recognised by most taxonomists. The three genera formerly included in Stixaceae — ''

Forchhammeria ''Forchhammeria'' is a genus of plants in the order Brassicales. This genus has previously been placed in the Stixaceae (now obsolete) and Capparaceae, but under the APG IV system is now included in the family Resedaceae. Species can be found ...

'', '' Stixis'' and ''

Tirania ''Tirania purpurea'', the sole species in genus ''Tirania'', is a species of climbing plant native to Asia. This genus is related to ''Forchhammeria'' and '' Stixis'', but the placement of these three is uncertain. They were placed in Capparace ...

'' — have sometimes been placed instead in the

Capparaceae The Capparaceae (or Capparidaceae), commonly known as the caper family, are a family of plants in the order Brassicales. As currently circumscribed, the family contains 33 genera and about 700 species. The largest genera are '' Capparis'' (about ...

, but it is now clear that they do not belong there. It is unknown where they do belong though, so currently they are unplaced at family rank. In the

APG IV system The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was publishe ...

, the genera comprising Stixaceae are included in the family

Resedaceae Resedaceae is a family of mostly herbaceous dicotyledonous plants comprising 107 known species in 8 to 12 genera: *'' Borthwickia'' - 1 species, sometimes placed in its own family Borthwickiaceae *'' Caylusea'' - 3 species *''Forchhammeria'' - 1 ...

References

Rosid families Historically recognized angiosperm families {{Rosid-stub