Latin name: Rumex aquaticus
Height: Up to 200cm
Where: Crom Mhin – east Loch Lomond side
When: Late June and early July for flowers
This is the National Park’s very own plant – it grows nowhere else in Britain. It is found in a few marshy places at the south east end of Loch Lomond. Despite its size it can be difficult to pick out if you are not an expert, though its long, slender leaves set it apart from many other docks and sorrels.
It blooms in early summer, its delicate greeny-cream flowers hanging in bunches from the axes of the leaves. By late summer these have turned into tiny, nut-brown seeds.