pond margin crucifer

pond margin crucifer

Observation - pond margin crucifer - UK and Ireland. Description: 17cm tall brassica. White petals. Yellowish-green sepals. Single disc-shaped stigma. Corolla 5mm diameter. Fruits twin-valved, circular cross section, 8mm long with short (2mm) beak and 9mm long stalk. Leaves alternate up stem (n0 basal rosette) up to 8mm

17cm tall brassica. White petals. Yellowish-green sepals. Single disc-shaped stigma. Corolla 5mm diameter. Fruits twin-valved, circular cross section, 8mm long with short (2mm) beak and 9mm long stalk. Leaves alternate up stem (n0 basal rosette) up to 8mm x 10mm almost circular, cordate, not toothed, hairless on 5mm long stalk.
Amongst Berula erecta at edge of garden pond.