| Fool's-water-cress | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Apiales |
| Family: | Apiaceae |
| Genus: | Apium |
| Species: | A. nodiflorum |
| Binomial name | |
|
Apium nodiflorum Lag. |
|
Apium nodiflorum (synonym Helosciadium nodiflorum), commonly called fool's-water-cress, is a flowering plant found in ditches or streams and native to western Europe. It is a low-growing or prostrate perennial with pinnate leaves which have a vague resemblance to those of watercress. Apium nodiflorum has short-stalked umbels of very small white 5-petalled flowers which are opposite the leaves and grow from the side of the stem at the leaf axils. It blooms in July and August.
It is not a poisonous plant, but it could be easily confused with the allegedly poisonous lesser water parsnip – Berula erecta. It is common throughout England, Wales and Ireland but is much less so in Scotland.