Zingiberidae is a botanical name at the rank of subclass.
[1] 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 Zingiberaceae.
The Cronquist system (1981) treats this as one of four subclasses in class Liliopsida (=monocotyledons).
It consists of: The APG II system does not use formal botanical names above the rank of order.
The plants involved here are assigned to order Zingiberales and Poales, both monocots.