Magnoliopsida

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Magnoliopsida

Magnoliopsida is the botanical name for a class: this name is formed by replacing the termination -aceae in the name Magnoliaceae by the termination -opsida (Art 16 of the ICBN). The class will necessarily include the family Magnoliaceae, but it is not otherwise fixed. The circumscription of this class will vary with the taxonomic system that is being used.

Cronquist and Takhtajan systems

In the Takhtajan system and the Cronquist system the name is used for the group known as dicotyledons.

Magnoliopsida in the Takhtajan system

The Takhtajan system used this internal taxonomy:

class Magnoliopsida dicotyledons
subclass Magnoliidae
subclass Nymphaeidae
subclass Nelumbonidae
subclass Ranunculidae
subclass Caryophyllidae
subclass Hamamelididae
subclass Dilleniidae
subclass Rosidae
subclass Cornidae
subclass Asteridae
subclass Lamiidae

Magnoliopsida in the Cronquist system

The Cronquist system used this internal taxonomy (in the 1981 version):

class Magnoliopsida dicotyledons
subclass Magnoliidae
subclass Hamamelidae
subclass Caryophyllidae
subclass Dilleniidae
subclass Rosidae
subclass Asteridae

Dahlgren and Thorne systems

The Dahlgren system and the Thorne system (1992) use the name Magnoliopsida for the flowering plants (angiosperms). However, the Cronquist system has been very popular and there have been many versions of the system published. In some of these Cronquist-based systems the name Magnoliopsida (at the rank of class) refers to the flowering plants (the angiosperms).

class Magnoliopsida angiosperms
subclass Magnoliidae dicotyledons
subclass Liliidae monocotyledons

Reveal system

The Reveal system uses the name Magnoliopsida for a group of the primitive dicotyledons, corresponding to about half of the plants in the magnoliids:

class 1. Magnoliopsida
superorder 1. Magnolianae
superorder 2. Lauranae

APG systems