Corydalis caseana A. Gray
Fumariaceae (Fumitory Family)
USDA Symbol: COCA15
A rather soft, almost succulent, tall plant with leafy, hollow stems, large, fern-like leaves, and dense racemes of 50-200 pinkish-white flowers.
The fruit of this and other species have elastic walls that instantly curl back and explosively eject seeds when touched. Scouler Corydalis (C. scouleri), found from British Columbia south to northern Oregon, is similar but has only 15-35 flowers in the largest racemes; its petals are pink, usually with purple at the tips.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Arrangement: Alternate
Fruit Type: Capsule
Size Notes: Up to about 5 feet tall, sometimes taller.
Bloom InformationBloom Color: White , Pink
Bloom Time: Jun , Jul , Aug
DistributionUSA: CA , CO , ID , NM , OR , UT , WA
Native Distribution: Northeastern Oregon south to central Sierra Nevada and east to Idaho and Colorado.
Native Habitat: Shady moist areas in mountains.
Growing ConditionsWater Use: Medium
Light Requirement: Shade
CaCO3 Tolerance: Low
BenefitWarning: This plant contains alkaloids poisonous to livestock, particularly sheep. Humans should generally avoid consuming plants that are toxic to animals.
Conspicuous Flowers: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Seed Network - Corvallis, OR
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Corydalis caseana in USDA Plants
FNA: Find Corydalis caseana in the Flora of North America (if available)
Google: Search Google for Corydalis caseana
MetadataRecord Modified: 2023-04-04
Research By: TWC Staff