Alisma plantago-aquatica
(Alismataceae)
Look in fresh water and mud for the water plantain. The tapered oval leaves have a checkerboard appearance with veins parallel to the central vein, and connecting transverse veinlets. Flowers have three sepals and three smooth-edged white to pinkish petals. They are arranged in a pyramid.
DISTRIBUTION: Margins of ponds in valleys and mountains throughout the Calif. Floristic Province; < 1600 m.