Clackamas Corydalis, Cold-water Corydalis, Marsh Corydalis: Corydalis aquae-gelidae (Synonym: Corydalis caseana ssp. aquae-gelidae) -
Case's Corydalis: Corydalis caseana ssp. cusickii (Synonyms: Corydalis caseana var. cusickii, Corydalis cusickii) - Disjunct population in the Cascades of Lane County, OR. Main population is in NE Oregon.
Scouler's Fumewort, Scouler's Corydalis, Western Corydalis: Corydalis scouleri -