Magnoliopsida

Magnoliopsida is a valid botanical name for a class of flowering plants.

In some of these Cronquist-based systems the name Magnoliopsida (at the rank of class) refers to the flowering plants (angiosperms).

The Reveal system used the name Magnoliopsida for a group of the primitive dicotyledons, corresponding to about half of the plants in the magnoliids: In the APG and APG II systems, botanical names are used only at the rank of order and below.

Above the rank of order, these systems use their own names, such as angiosperms, eudicots, monocots, rosids, etc.

The idea that dicotyledons are a taxonomic unit and require a formal name is rejected by the APG: the dicots are considered to be paraphyletic.