Caltha palustris

A showy wetland inhabitant with yellow flowers similar to those of a buttercup

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Caltha palustris [Marsh-marigold]

Species grows in the wild/spontaneouslySpecies is native to PA

An erect, glabrous, succulent perennial herb with showy, shiny clusters of buttercup-like flowers.  Leaves are mostly basal, glossy, heart or kidney-shaped. Stems are thick, hollow, and branching.  Grows up to 2 feet tall and inhabits a variety of wetlands - marshes, damp woods, swamps, and bogs.

Wet open woods and meadows, marshes, swamps, and bogs.

Wetland Cod: OBL

Flowers April through early July

Flowers rise above leaves; 2 to 5 per stem on naked stalks; bright, shiny yellow with 5 petal-like sepals and highly visible veins radiating from the base.  Ring of many yellow stamens in the center.

Basal leaves rounded or cordate, entire or crenate; petioles up to 20 cm.

Cauline leaves alternate, similar to basal, reducing upward.

Fruits divergent follicles, up to 14 mm long, short-beaked.  The follicle is initially green and erect, spreading out with age and turning light green-brown, releases the many seeds.

Caltha palustris gallery
Common Names
Marsh-marigold