Stem. - Smooth. Leaves. - The lower lyre-shaped; the upper ovate, toothed or deeply incised at their base. Flowers. - Yellow, growing in racemes. Pod. - Linear, erect or slightly spreading.

Winter Cress.   B. vulgaris.

Plate XLII. Winter-Cress. - B. vulgaris

As early as May we find the bright flowers of the winter-cress along the roadside. This is probably the first of the yellow mustards to appear.