[Wildflowers with 4 Petals West of the Cascade Mountains of Oregon and Washington]
The Bleeding Heart Family West of the Cascade Mountains of Oregon and Washington
Papaveraceae (formerly the Fumariaceae)
All the Papaveraceae West of the Cascade Mountains of Oregon and Washington.
Corydalis and Fumeworts: The Genus Corydalis -
Dutchman's Breeches, Fumitorys and Bleeding Hearts: The Genus Dicentra -