Marsh Yellow-cress - Rorippa palustris

Short to medium hairless plant, lower leaves pinnately lobed, often rather lyre shaped, the upper leaves unstalked, pinnately lobed to unlobed, with slight ears at the base. Flowers yellow, small 5 mm, sepals more than 1.6 mm long equal to petals, the fruit short, rarely much longer than its stalk.

other Rorippa and yellow crucifers in wet places

Leaves pinnately lobed, fruits oblong.  Petals about as long as sepals

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

Bare ground subjected to winter flooding, temporary pools that dry out, margins of streams and lakes, damp pathways.

June to August.

Annual or biennial.

Fairly frequent throughout Britain.

Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 112 of the 617 tetrads.

In the current Checklist (Jeeves, 2011) it is listed as Native, frequent