Corydalis cava aka Hollowroot

Corydalis cava is a species of flowering plant in the Papaveraceae family, found in moist, shady woodland habitats throughout most of mainland Europe, ranging from Spain to Sweden, and as far east as Ukraine, Belarus, and the Caucasus. It is a spring ephemeral, growing to 15-30 cm with foliage that appears in spring and dies down in summer. The long-spurred flowers, which may be mauve, purple, red, or white, also appear in spring. This plant and some other tuberous species contain the alkaloid bulbocapnine, which is occasionally used in medicine but lacks scientific evidence on correct dosages and side effects. On the other hand, the Hollowroot is a super rare houseplant that thrives with regular watering and long-lasting, direct light, ideally less than 1 foot from a window.