Pseudofumaria lutea Yellow Corydalis

A yellow-flowered perennial with fumitory-like flowers which is cultivated commonly in gardens especially on walls and other stonework. It is native to the slopes  of the  south-western and central Alps and was first recorded in the wild in Britain in 1796. It is now naturalised widely in England and Wales, but less so in Scotland and Ireland. It can be found on old mortered wall, in pavement cracks and in waste ground with stony rubble, mostly in the lowlands. Plants contain significant amounts of bioactive compounds such as benzophenanthridine alkaloids and polyphenolic compounds.

Neophyte