Easily confused with : Hairy Bittercress, but that has non-hairy stems, whereas Wavy Bittercress has hairy stems! Also, the seed-pods of Hairy Bittercress usually over-top the flowers, whereas in Wavy Bittercress the pods are usually lower than the top-most flower. Wavy Bittercress has nominally six stamens whereas Hairy Bittercress has but four. The number of stem leaves also differs: Wavy Bittercress has between four and ten whereas Hairy Bittercress has only one to four stem leaves. Although the leaves of Wavy Bittercress are hairless, those of Hairy Bittercress only might possibly be hairy.
No relation to :
Wavy St John's Wort nor to Wavyleaf Sea-Lavender [plants with similar names].
Hybridises with :
but luckily both of these are present in but very few locations, and are not present where the above photographs were taken.
- Hairy Bittercress (Cardamine hirsuta) to produce
Cardamine × zahlbruckneriana (Cardamine flexuosa × hirsuta)
- Cuckoo Flower (Cardamine pratensis) to produce
Cardamine × fringsii (Cardamine pratensis × flexuosa)
Wavy Bittercress is very weedy. if you have it in your garden, you will like as not never get rid of it for good. It favours damp and disturbed ground in the shade. Not averse to mud, marshes or stream-sides and mountains. Almost, but not quite, ubiquitous throughout the UK.