"TheGardener" wrote in a message:

I have been e-mailed by a French student, who is making a dossier on
Ranunculus ficaria 'Brazen Hussy'. He wants to know if it is a naturally
occurring variation, and if so, where is it found, or whether it is a
plant which has been developed genetically and only available
commercially.
---
I have had the Lesser celandine growing in my garden for at least nineteen
years. About fifteen years ago I was given a few young plants of 'Brazen
Hussy' by a member of the AGS. who warned me not to grow them together
as the Lesser celandine, being the stronger of the two varieties,
future Brazen Hussy plants would soon lose their attractive crinkly, dark
plum coloured leaves. Taking his advice, I moved most well away from the
celandines leaving a few Brazen Hussies nearby. During the last ten years
those nearby have almost reverted back to the green leaved celandines whilst
the ones planted well away still remain Brazen Hussies retaining their
dark plum leaves.

MC