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Marsh marigold - Hófsóley

Caltha palustris


The marsh marigold is plant of the family Ranunculaceae found in wet areas in temperate regions of the Northern Hemisphere. Its striking yellow flowers have no petals but 4-9 (mostly 5) petal-like sepals and many yellow stamens. In Iceland it is one of the first flowers to bloom at the end of winter.


Marsh area along a river. Nesting ground for greylag geese. Þingvellir National Park, Iceland, a Unesco World Heritage Site. See the geese and more marsh marigolds at:


In Iceland this plant is found in the lowlands, but is sensitive to salinity. All parts of the mature plant are toxic. The toxin is protoanemonin (sometimes called anemonol or ranunculol), a toxin found in all plants of the buttercup family (Ranunculaceae).

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DanielePralong 7 years ago

Hi Akimz! I see that your mission is located in North America. This plant was spotted in Iceland.

Akimz 7 years ago


We would love to have this spotting be a part of our mission on the distribution of native and invasive look-alike buttercups. The marsh marigold looks similar to the lesser celandine and many people get them confused. Feel free to join!

Spotted by


Spotted on Jun 17, 2013
Submitted on Aug 30, 2013


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