Please can anyone suggest what this plant may be. No photo available
at present. It is in a friend's garden. She says it is nothing she
planted.
It is just like a violet leaf, but bigger than any violet I've seen;
about 3 inches across the widest part.
It is growing in a clump as violets do, but no sign of any flowers as
yet.
Any suggestions what I can look up?
TIA

Pam in Bristol