Synonyms for Shield-shaped (same or very similar meaning)
WordNet sense 1 (of a leaf shape; round, with the stem attached near the center of the lower surface rather than the margin (as a nasturtium leaf for example)):
peltateWordNet sense 2 ((botany) of leaf shapes; of leaves having no divisions or subdivisions):
simple, unsubdividedFrom the ODE community, based on WordNetadd/edit