Callitriche fassettii Schotsman - Fassett's water-starwort.

Callitriche hermaphroditica L. - Autumn water-starwort. Present in the CalFlora Database (California distribution map). Synonymy: Callitriche autumnalis L.

Callitriche heterophylla Pursh - Greater water-starwort. Present in the Texas flora and known locally as: Larger w (Texas Distribution by vegetation zone). Present in the CalFlora Database (California distribution map).

ssp. bolanderi (Hegelm.) Calder & Taylor Present in the CalFlora Database but treated as Callitriche heterophylla Pursh var. bolanderi (Hegelm.) Fassett (California distribution map). Synonymy: Callitriche bolanderi Hegelm., Callitriche heterophylla var. bolanderi (Hegelm.) Fassett

ssp. heterophylla Synonymy: Callitriche anceps Fern.

Callitriche longipedunculata Morong - Long-stock water-starwort.

Callitriche marginata Torr. - Winged water-starwort. Present in the CalFlora Database (California distribution map). A photograph from CalPhotos. Synonymy: Callitriche sepulta S. Wats.

Callitriche palustris L. - Vernal water-starwort. Present in the Texas flora (treated as Callitriche verna L.by Hatch et al, 1990) and known locally as: Common w. (Texas Distribution by vegetation zone). Present in the CalFlora Database but treated as Callitriche verna L. (California distribution map). Images available from the Vascular Plant Image Gallery. Synonymy: Callitriche palustris var. verna (L.) Fenley ex Jepson, Callitriche verna L.

Callitriche pedunculosa Nutt.. Present in the Texas flora and known locally as: Nuttall w. (Texas Distribution by vegetation zone). Synonymy: Callitriche nuttallii Torr.

Callitriche peploides Nutt. - Matted water-starwort. Present in the Texas flora and known locally as: Mat w. (Texas Distribution by vegetation zone). Synonymy: Callitriche peploides var. semialata Fassett

Callitriche stagnalis Scop. - Pond water-starwort. Present in the CalFlora Database (California distribution map).

Callitriche terrestris Raf. - Terrestrial water-starwort. Present in the Texas flora and known locally as: Annual W. (Texas Distribution by vegetation zone). Synonymy: Callitriche austinii Engelm., Callitriche deflexa A. Braun, Callitriche deflexa var. austinii (Engelm.) Hegelm., Callitriche deflexa var. subsessilis Fassett

Callitriche trochlearis Fassett - Effluent water-starwort. Present in the CalFlora Database (California distribution map).