Synonyms: Apium nodiflorum (homotypic); Apium nodiflorum f. ochreatum; Apium nodiflorum f. stoloniferum; Apium nodiflorum stoloniferum; Apium nodiflorum submersum; Apium nodiflorum var. palatinum; Apium nodiflorum var. vulgare; Ciclospermum nodiflorum; Cicuta nodiflora (homotypic); Helodium nodiflorum (homotypic); Helodium repens (heterotypic); Helosciadium hybridum (homotypic); Helosciadium intermedium (homotypic); Helosciadium nodiflorum f. submersum; Helosciadium nodiflorum f. terrestre; Helosciadium nodiflorum var. giganteum; Helosciadium nodiflorum var. ochreatum; Helosciadium nodiflorum var. repentiforme; Helosciadium nodiflorum var. reptans; Helosciadium palatinum; Helosciadium stoloniferum; Helosciadum nodiflorum; Laoberdes repens (homotypic); Lavera nodiflora (homotypic); Meum nodiflorum (homotypic); Pimpinella nodiflora (homotypic); Selinum nodiflorum (homotypic); Seseli nodiflorum (homotypic); Sison nodiflorum (homotypic); Sium giganteum; Sium intermedium; Sium nodiflorum (homotypic); Sium nodiflorum var. palatinum; Sium repens (heterotypic); Sium repens ochreatum; Sium reptans; Sium stoloniferum