Corydalis lutea (=Pseudofumaria lutea), sometimes called yellow fumitory or yellow corydalis, is a shortlived perennial in the family Fumariaceae. The genus has about 300 species, and is named for the Greek korydalis, crested lark, referring to the flower's resemblance to the lark's head. Other common names include yellow fumitory, hollowort, and yellow larkspur. Native to the southern Alps of Europe, it is hardy in zones 4-8.