pennywort
/ˈpenɪwɜːt/noun
1- any of a number of plants with rounded leaves, in particular有圆形叶子的植物, 尤指：
1.1
wall pennywort
a small Eurasian plant that grows in crevices (Umbilicus rupestris, family Crassulaceae).
1.2
- （marsh或water pennywort）a small creeping or floating plant of marshy places (Hydrocotyle vulgaris, family Umbelliferae).普通天胡荽（拉丁名Hydrocotyle vulgaris, 伞形科）。亦称NAVELWORT.