Callitriche heterophylla subsp. bolanderi (Hegelmaier) Calder & Roy L. Taylor

Callitriche heterophylla subsp. bolanderi (Hegelmaier) Calder & Roy L. Taylor is a synonym sensu FNA Ed. Comm., 2019 of:

Callitriche heterophylla Pursh, an accepted species name sensu FNA Ed. Comm., 2019.