Irish wildflowers

Trifid Bur-marigold, Bidens tripartita, Scothóg leathan
Photographs: County Waterford


Trifid Bur-marigold
Bidens tripartita
Scothóg leathan
Family: Asteraceae

Flowering July-September. Annual. Native.

Ray-less yellow flower-heads with black-streaked, sepal-like inner bracts.
Outer bracts long, leaf-like. Opposite, stalked lower leaves, many usually
with 1-2 pairs of lobes. Hairless plant with stout erect stems. Height to 70cm.

Nutrient-rich gravel or mud by ponds, rivers, marshes.

Similar: Nodding Bur-marigold, B. cernua
     



Trifid Bur-marigold. Lismore, County Waterford. July 2008

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