LATTICELEAF, lătĭs-lēf, or LATTICEPLANT (also called laceleaf and water-yam), a remarkable aquatic plant (Aponogeton fenestralis) of Madagascar, noteworthy for the structure of its leaves. The blade resembles latticework or open needlework, the longitudinal ribs being crossed by tendrils, and the interstices between them being open. The root, which is fleshy, and resembles that of the yam, is farinaceous and edible.