Caltha palustris
yellow marshmarigold
WTU specimens
Other herbaria

Distribution: Coastal Alaska, south along the coast to Oregon

Habitat: Mostly in coastal bogs

Flowers: July-August

Origin: Both native and introduced populations

Conservation Status: Not of concern

Description:
General:

Glabrous, succulent perennial, the stems becoming decumbent, often rooting at the nodes.

Leaves:

Leaves mostly basal, long-petiolate, the blades rounded-reniform, 4-6 cm. long and broad; cauline leaves usually 2, much reduced, short-petiolate.

Flowers:

Flowers usually solitary; sepals usually 5, yellow, oblong-elliptic; petals none; stamens numerous; pistils 5-10.

Fruits:

Follicles sessile.

Accepted Name:
Caltha palustris L.
Publication: Sp. Pl. 1: 558. 1753. 1753.

Synonyms & Misapplications:
Caltha arctica R. Br.
Caltha asarifolia DC. [HC]
Caltha palustris L. ssp. asarifolia (DC.) Hultén
Caltha palustris L. var. asarifolia (DC.) Rothr.
Caltha palustris L. var. flabellifolia (Pursh) Torr. & A. Gray
Caltha palustris L. var. palustris [KZ99]
Additional Resources:

PNW Herbaria: Specimen records of Caltha palustris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Caltha palustris checklist entry.

E-Flora BC: Caltha palustris atlas page.

CalPhotos: Caltha palustris photos.

USDA Plants: Caltha palustris information.

16 photographs:
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