Magnoliopsida

         Magnoliopsida is a valid botanical name for a class of flowering plants. By definition the class will include the family Magnoliaceae, but its circumscription can otherwise vary, being more inclusive or less inclusive depending upon the classification system being discussed. In the Takhtajan system and the Cronquist system the name was used for the group known as dicotyledons.

Reference:

1. http://en.wikipedia.org/wiki/Magnoliopsida