Irish wildflowers

Creeping Yellow-cress, Rorippa sylvestris, Biolar buí reatha
Photographs: County Waterford


Creeping Yellow-cress
Rorippa sylvestris
Biolar buí reatha
Family: Brassicaceae

Flowering June-September. Perennial. Native.

Yellow flowers on erect flowering stems. Petals approx 2x long as sepals.
Linear ascending fruit, 2x long as pedicels. Leaves with lanceolate toothed leaflets. Stem-leaves pinnate or deeply pinnate. Creeping roots, stems decumbent or more/less erect, to 60cm. Spreads by seed and root fragments.

Bare, damp ground on lake-shores and river-banks. Scattered Irish distribution.
Identification by Paul Green
     


    
Creeping Yellow-cress. Lismore, County Waterford. July 2008

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