thumbnail|300px|Callitriche hermaphroditica, a member of the Callitrichaceae Callitrichales is a proposed order of flowering plants. As circumscribed by American botanist Arthur Cronquist in the Cronquist system (1981), the order included three families: Hippuridaceae Callitrichaceae Hydrostachyaceae A feature is the single stamen in the flower.
thumbnail|300px|Callitriche hermaphroditica a member of the Callitrichaceae Callitrichales is a proposed order of flowering plants. As circumscribed by American botanist Arthur Cronquist in the Cronquist system (1981), the order included three families: Hippuridaceae Callitrichaceae Hydrostachyaceae A feature is t,he single stamen in the flower.