| 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) |