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| Nymphaeales | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Nymphaeales Dumortier |
Nymphaeales is a botanical name at the rank of order. This order is now accepted by the APG II system, of 2003 (changed from the APG system of 1998). It is recognized by some systems of plant taxonomy, but others use different placements for the families.
The AP-website place two families in the order, the Nymphaeaceae and Cabombaceae, and considers this order to be a basal, or early diverging, group of angiosperms. These families are united by being families of aquatic herbs and are known from the fossil record as early as the Lower Cretaceous.
Cronquist
The Cronquist system, of 1981, placed it in subclass Magnoliidae, in class Magnoliopsida of division Magnoliophyta . It used this circumscription:
- order Nymphaeales
- family Nelumbonaceae
- family Nymphaeaceae
- family Barclayaceae
- family Cabombaceae
- family Ceratophyllaceae
Thorne (1992)
The Thorne system (1992) placed it in superorder Nymphaeanae in subclass Magnoliideae in class Magnoliopsida . It used this circumscription:
- order Nymphaeales
- family Cabombaceae
- family Nymphaeaceae
Dahlgren
The Dahlgren system placed it in superorder Nymphaeanae, in subclass Magnoliideae , in class Magnoliopsida . It used this circumscription:
- order Nymphaeales
- family Cabombaceae
- family Nymphaeaceae
- family Ceratophyllaceae