| Name | Callitriche deflexa var. austinii (Engelmann) Hegelmaier | 
| Authorship | (Engelmann) Hegelmaier | 
| Rank | Variety | 
| Placed in | Callitriche deflexa A. Braun ex Hegelmaier | 
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Callitriche deflexa var. austinii (Engelmann) Hegelmaier | 
| Identification made in | [no date] (3) | 
