The other species in the genus Corydalis:

Corydalis heterocarpa var. japonica / Kikeman
Corydalis incisa / Murasakikeman
Corydalis indica f. candida / Yukiyabukeman
Corydalis indica f. pallesems / Shiroyabukeman
Corydalis lineariloba / Yamaengosaku
Corydalis ochotensis var. raddeana / Nagaminotsurukikeman
Corydalis pallida / Fuurokeman
Corydalis pallida var. tenuis / Miyamakikeman
Corydalis speciosa / Ezokikeman

Corydalis ochotensis var. raddeana / Nagaminotsurukikeman