E-Flora BC: Electronic Atlas of the Flora of British Columbia

General:
Perennial aquatic herb from thick, erect rhizome; stems slender; stolons lacking.

Leaves:
Floating, arising from the summit of the rhizomes, long-stalked, without blotches or dots, heart-shaped, the blades 2-11 cm wide, 3-13 cm long.

Flowers:
Inflorescence of showy flowers that open in the morning and close in the afternoon, 3-7.5 cm wide; petals white, 10-17, equal to the sepals; sepals 2-3 cm long; stamens yellow; stigmatic disk margin appendages 3-4 mm long.

Fruits:
Berry-like capsules, leathery, many-seeded, rupturing irregularly with a jelly-like seed mass; seeds egg-shaped, 2-3 mm long, 1.5-2 mm wide.