marshwort
/ˈmɑːʃwɜːt/noun
1- a white-flowered plant of the parsley family which grows beside streams and in boggy areas沼芹。
1.1
- Genus Apium, family Umbelliferae: several species, in particular A. nodiflorum.芹属, 伞形科：数种, 尤指节花芹。