Callitrichales

{{Short description|Order of flowering plants}}

File:Callitriche spp Sturm38.jpg, a member of the Callitrichaceae]]

Callitrichales is a proposed order of flowering plants.{{Cite journal |last=Jeffrey |first=C. |date=1984 |title=Review of An Integrated System of Classification of Flowering Plants |url=https://www.jstor.org/stable/4108577 |journal=Kew Bulletin |volume=38 |issue=4 |pages=675–677 |doi=10.2307/4108577 |jstor=4108577 |issn=0075-5974}} 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.

The order is not recognized by the Angiosperm Phylogeny Group; the family Hydrostachyaceae is placed in the order Cornales and the plants making up the other two families are included in the family Plantaginaceae.