Helobiae
Helobiae is a botanical name, and is no longer valid. It was used in the Engler and Wettsteins systems of plant taxonomy for an order of flowering plants; in the latter system it had this circumscription:
- order Helobiae
- : family Alismataceae
- : family Butomaceae
- : family Hydrocharitaceae
- : family Scheuchzeriaceae
- : family Aponogetonaceae
- : family Potamogetonaceae
- : family Najadaceae
The Cronquist system placed quite a few of the plants involved in order Alismatales, as does the APG II system, although it assumes a much expanded circumscription of the order.