Distribution: Coastal Alaska, south along the coast to Oregon
Habitat: Mostly in coastal bogs
Flowers: July-August
Origin: Both native and introduced populations
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles
Glabrous, succulent perennial, the stems becoming decumbent, often rooting at the nodes.
Leaves mostly basal, long-petiolate, the blades rounded-reniform, 4-6 cm. long and broad; cauline leaves usually 2, much reduced, short-petiolate.
Flowers usually solitary; sepals usually 5, yellow, oblong-elliptic; petals none; stamens numerous; pistils 5-10.
Follicles sessile.
PNW Herbaria: Specimen records of Caltha palustris in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Caltha palustris checklist entry
OregonFlora: Caltha palustris information
E-Flora BC: Caltha palustris atlas page
CalPhotos: Caltha palustris photos