Commelinidae

Commelinidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used (there are many such systems); the only requirement being that it includes the family Commelinaceae. Wikipedia has adopted the APG II system which does not use formal botanical names above the rank of order.

A well-known system that did use this name is the Cronquist system (1981):

• subclass Commelinidae

  order Commelinales

  order Eriocaulales

  order Restionales

  order Juncales

  order Cyperales

  order Hydatellales

  order Typhales

The APG II system assigns most of the plants involved here to the clade commelinids (its predecessor, the APG system knew the clade commelinoids).