What is "dilleniidae"

Dicotyledonae \Dicotyledonae\ n. (Bot.) a class of plants comprising those seed plants that produce an embryo with two cotyledons and net-veined leaves; divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive); Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae.

Syn: Dicotyledones, class Dicotyledones, class Dicotyledonae, Magnoliopsida, class Magnoliopsida.

Dilleniidae \Dilleniidae\ n. a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; it contains 69 families including Ericaceae and Cruciferae and Malvaceae; it is sometimes classified as a superorder.

Syn: subclass Dilleniidae.

Dillenidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used; the only requirement being that it includes the family Dilleniaceae. A well-known system that uses this name is the Cronquist system, and in the original 1981 version of the system the circumscription was:

• subclass Dilleniidae order Dilleniales order Theales order Malvales order Lecythidales order Nepenthales order Violales order Salicales order Capparales order Batales order Ericales order Diapensiales order Ebenales order Primulales

Recent molecular systematic studies have shown that this group is polyphyletic. The APG II system does not use formal botanical names above the rank of order but assigns the plants involved to various orders in the asterids and rosids clades.

Category:Plant taxonomy