Corydalis incisa, incised fumewort, is an annual or biennial herbaceous species of plant in the poppy family.

[2] The wildflower is native to Japan, Korea, Taiwan, and China, found in forests, clearings, and irrigation channels.

The life cycle begins in spring when seeds germinate and grow into small rosettes supported by a tiny tuber.

Corydalis incisa can be found in waterways, rock walls, disturbed areas, and "mesic and alluvial habitats".

Apparently thriving in fine alluvial sediments, Corydalis incisa forms dense stands, crowding out more desirable riparian understory plants.