pennywort

(penē wʉrt′)

noun

any of various plants with small round leaves growing in crevices of rocks and walls or in marshy places, as any of a genus (Hydrocotyle) of perennial plants of the umbel family and a small North American plant (Obolaria virginica) of the gentian family

Origin: ME penywort: see penny & wort

See pennywort in American Heritage Dictionary 4

noun
Any of several plants having rounded leaves suggestive of pennies, as:
a. A Eurasian plant (Umbilicus rupestris) having thick peltate leaves and yellowish-green flowers. Also called navelwort.
b. A North American plant (Obolaria virginica) having fleshy leaves and small white or purplish flowers.

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