baby's-tears

or ba·by-tears

[ bey-beez-teerz ]
/ ˈbeɪ bizˌtɪərz /

noun, plural ba·by's-tears. (used with a singular or plural verb)

a mosslike plant, Soleirolia (or Helxine) soleirolii, of the nettle family, native to Corsica and Sardinia, having small, roundish leaves and minute flowers.
Also called mind-your-own-business.