Magnoliidae
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Magnoliidae".

Magnoliidae is a botanical name of a subclass. The circumscription of the subclass will vary with the taxonomic system being used (there are many such systems). The only requirement is that it must include the family Magnoliaceae (Art 16 of the ICBN).

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Cronquist system

The Cronquist system used this name for one of six subclasses (within class Magnoliopsida = dicotyledons). In the original version of this system the circumscription was (1981):

In APG II, many of the plants involved are placed in the magnoliids.

Dahlgren and Thorne system

In the Dahlgren and the Thorne systems the name Magnoliidae is used for the dicotyledons. This is also the case in some of the systems derived from the Cronquist system.

Dahlgren

The internal taxonomy in the Dahlgren system:

Thorne

The internal taxonomy in the Thorne system (1992) (in the version of the system as depicted by Reveal):

APG system

The APG and APG II systems do not use formal botanical names above the rank of order. That is, these systems do not use names such as Magnoliidae. The APG magnoliids are effectively a more exactly circumscripted Cronquist Magnoliidae however.
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