Najadales
Najadales is a botanical name of an order of flowering plants. A well-known system that used this name is the Cronquist system (1981), that used this name for an order in subclass Alismatidae with this circumscription:
-  order Najadales
- family Aponogetonaceae
 - family Scheuchzeriaceae
 - family Juncaginaceae
 - family Potamogetonaceae
 - family Ruppiaceae
 - family Najadaceae
 - family Zannichelliaceae
 - family Posidoniaceae
 - family Cymodoceaceae
 - family Zosteraceae
 
 
The APG II system, used here, assigns the plants involved to the expanded order Alismatales, in the clade 'monocots'.
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