Creeping Yellow-cress - Rorippa sylvestris

This is a rather straggling plant with runners. Leaves are mostly pinnately lobed. Flowers are yellow, four petalled, about 5 mm across with petals about twice as long as the sepals. The fruit is linear, 8 to 18 mm.

other Rorippa and yellow crucifers in wet places

Upper stem-leaves lobed, long seed-pods.  Petals longer than sepals

General photo of plant in habitat, and photo showing details of leaves, flowers/fruits 

Damp and bare habitats, stream and pool margins, ditches, especially where water stands only in winter. Also in nursery gardens.

Flowers June to September.

Perennial.

Widespread throughout Britain but scarce in Scotland.

Occasional and rather local in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 23 of the 617 tetrads. In the current Checklist (Jeeves, 2011) it is listed as Native, occasional