1 cm tall at the most.
Found in seasonal wetland/vernal pool at Rifle Camp Meadow.

Thank you to Doreen Smith for her expertise in identifying this plant.

Thank you to Vernon Smith for his excellent photography.

After many months of searching, I finally located one tiny patch clinging on, despite the Park Service's best efforts to exterminate every rare and vulnerable plant species in Point Reyes via overgrazing and cattle trampling.

This remnant may not last long; it is sandwiched into a 2ft by 1ft gap between two heavily used cattle trails, and shows signs of extensive trampling and grazing.