Unknown flower

[BROCSMAN]

I found this growing on a wall in the Isle of Man. I'd be grateful for help identifying it. Sorry about the quality of the photo.

[davidbr]

It looks like a Cornsalad (Valerianella sp.) to me - the species can only be told apart by the fruits, so I doubt there's enough detail on your photo to use.

The commonest species, though, is Common Cornsalad Valerianella locusta - unless proven otherwise, that's what any photos I take of them go down as

[BROCSMAN]

That's good enough for me.

Many thanks.

[pleb]

I agree with David that it is Cornsalad but down in sunny ol' south west Devon, 99% of the plants are Valerianella carinata and it is unusual to find V. locusta but, as David says, they can only be told apart by the fruits.