What is this yellow flower?

[Martin H]

It's also the food plant of the Common Blue butterfly, so if you grow enough of it you might get a colony of them going. What's not to like!

[veggiechicken]

Saw a lot of clumps of this alongside a motorway exit road today. Couldn't stop for a close look though!

[Verinda]

I have lots of it growing on my bank and I love it. So do the common blues!

[Verinda]

Who needs shop bought plants when you can have birds foot trefoil and clover!

[IMG][/IMG]

[alexhopper]

I guess it is Broom? the picture is not so clear, and we cant see the leafs of this flower. so cant say exactly which flower is this

[ancee]

Ew! Granny's toenails! What an awful name! Eugh! I can picture horrible feet now