A seeblatt is a Germanic representation of a water-lily leaf, drawn in a highly stylized manner: heart-shaped, with a cruciform or trefoil incision in chief. It is a period charge, found in the arms of Ribbing, 1295 [Volborth 131]. Note that “seeblätter” is the usual plural form of “seeblatt”.
Clarissa Wykeham bears: Or, a seeblatt azure.
Rebecca Marchand d’Alsace bears: Vert, a seeblatt argent.
Angharad Caprioli Amante bears: Per chevron sable and gules, three seeblätter argent.