Dicotyledones, class Dicotyledones, Dicotyledonae, class Dicotyledonae, Magnoliopsida, class Magnoliopsida

comprising seed plants that produce an embryo with paired 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

• class — (biology) a taxonomic group containing one or more orders

• monocot family, liliopsid family — family of flowering plants having a single cotyledon (embryonic leaf) in the seed
• dicot family, magnoliopsid family — family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
• dicot genus, magnoliopsid genus — genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
• dicot, dicotyledon, magnoliopsid — flowering plant with two cotyledons
• Magnoliidae, subclass Magnoliidae, ranalian complex — a group of families or trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder
• Myricales, order Myricales — coextensive with the family Myricaceae
• Aristolochiales, order Aristolochiales — order of plants distinguished by tubular petaloid perianth and inferior ovary
• Caryophyllidae, subclass Caryophyllidae — a group of families of mostly flowers having basal or free-central placentation and trinucleate pollen (binucleate pollen is commoner in flowering plants); contains 14 families including: Caryophyllaceae (carnations and pinks); Aizoaceae; Amaranthaceae; Batidaceae; Chenopodiaceae; Cactaceae (order Opuntiales); Nyctaginaceae; Phytolaccaceae; corresponds approximately to order Caryophyllales; sometimes classified as a superorder
• Asteridae, subclass Asteridae — a group of mostly sympetalous herbs and some trees and shrubs mostly with 2 fused carpels; contains 43 families including Campanulales; Solanaceae; Scrophulariaceae; Labiatae; Verbenaceae; Rubiaceae; Compositae; sometimes classified as a superorder
• Primulales, order Primulales — Primulaceae; Theophrastaceae; Myrsinaceae; and (in some classifications) Plumbaginaceae
• Rosidae, subclass Rosidae — a group of trees and shrubs and herbs mostly with polypetalous flowers; contains 108 families including Rosaceae; Crassulaceae; Myrtaceae; Melastomaceae; Euphorbiaceae; Umbelliferae
• Proteales, order Proteales — coextensive with the family Proteaceae
• Casuarinales, order Casuarinales — order of chiefly Australian trees and shrubs comprising the casuarinas; 1 family: Casuarinaceae
• Diapensiales, order Diapensiales — used in some classifications: coextensive with family Diapensiaceae
• Gentianales, order Gentianales — an order of dicotyledonous plants having gamopetalous flowers; Gentianaceae; Apocynaceae; Asclepiadaceae; Loganiaceae; Oleaceae; Salvadoraceae
• Oleales, order Oleales — coextensive with the family Oleaceae; in some classifications included in the order Gentianales
• Hamamelidae, subclass Hamamelidae — a group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae (includes the Amentiferae); sometimes classified as a superorder
• Juglandales, order Juglandales — coextensive with the family Juglandaceae
• Dilleniidae, subclass Dilleniidae — 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; contains 69 families including Ericaceae and Cruciferae and Malvaceae; sometimes classified as a superorder
• Urticales, order Urticales — an order of dicotyledonous plants including Moraceae and Urticaceae and Ulmaceae
• Plantaginales, order Plantaginales — coextensive with the family Plantaginaceae
• Polygonales, order Polygonales — coextensive with the family Polygonaceae,
• Salicales, order Salicales — coextensive with the family Salicaceae
• Sapindales, order Sapindales — an order od dicotyledonous plants
• Ebenales, order Ebenales — trees or shrubs of the families Ebenaceae or Sapotaceae or Styracaceae or Symplocaceae
• Sarraceniales, order Sarraceniales — plants that are variously modified to serve as insect traps: families Sarraceniaceae; Nepenthaceae; Droseraceae
• Scrophulariales, order Scrophulariales — used in some classification systems; often included in the order Polemoniales
• Rhamnales, order Rhamnales — an order of dicotyledonous plants
• Piperales, order Piperales — Piperaceae; Saururaceae; Chloranthaceae

• Angiospermae, class Angiospermae, Magnoliophyta, division Magnoliophyta, Anthophyta, division Anthophyta — comprising flowering plants that produce seeds enclosed in an ovary; in some systems considered a class (Angiospermae) and in others a division (Magnoliophyta or Anthophyta)