Callitriche marginata

Callitrichaceae Family (Water Starwort)

Distinguishing Characteristics

• Floating rosettes on long stems during aquatic phase.
   
• Small tufts adhering to soil during terrestrial phase. Four nutlets with winged margins. Pedicels elongate to push the seeds underground.

Habitat(s)

• Vernal pools and other seasonal wetlands.

Additional Information

• Native. Occurs from British Columbia to Baja California.
   
• Flowering time: February - April.
   
• May not be the only Callitriche on Mather Field. Plants with no floating leaves would be C. hermaphroditica (vernal pools) and those with sessile fruit would be C. heterophylla (streams).
   
• Additional images from CalPhotos.
   
• Treatment from Jepson Manual.