In general, allies are people or groups that have joined an alliance. When spelt with a capital A, Allies usually denotes the members of the alliances directed against the Central Powers in World War I and against the Axis powers in World War II.
... into a single order. Families include:
Family Alismataceae[?]
Family Limnocharitaceae[?]
Family Butomaceae[?]
Family Hydrocharitaceae[?]
Family Najadaceae[?]
...