Any of a number of plants with rounded leaves.
('wall pennywort') a small Eurasian plant that grows in crevices (Umbilicus rupestris, family Crassulaceae).Also called cotyledon or navelwort
('marsh' or 'water pennywort') a small creeping or floating plant of marshy places (Hydrocotyle vulgaris, family Umbelliferae).Also called navelwort
a creeping perennial of the genus Hydrocotyle, family Umbelliferae: numerous species, including the North American water pennywort (H. americana)
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