© Bob Ford/Nature Portfolio
Lesser Celandine photographed on March 9th 2008
The yellow flower looks a bit like a buttercup, which is not surprising as it is in the same family.
However, Lesser Celandines have at least 8 petals, whereas buttercups always have 5.
The leaves have a very high vitamin C content, so used to be eaten as a cure for scurvy.
But if you want to try them make sure you pick them before the flowers appear, as they soon develop a poison.
I'd rather eat an orange myself.