Newtonmore, Scotland

We stayed three nights in the delightful small town of Newtonmore in the Highlands. In the centre of the town, there's a small lake.... called a loch in Scotland. Loch Imrich. The loch is a kettle-hole formed by glacial action during one of the ice ages. For many winters the pond was used for the sport of curling, but now there's curling rink in the village.
We walked the trail around the edge of the loch.... a lovely place to spend a quiet hour.

Digitalis purpurea. Foxgloves can be either purple of white. The flowers are always growing on one side of the stem on the wild plant. If the flowers surround the stem, then that is a garden variety.

The leaves and flowers of foxglove contain the spiro-steroid, Digoxigenin, used in biochemistry and immunohistological diagnosis. The compounds digitoxin and digoxin are used to make the drug digitalis, used as a heart stimulant. When I was little, I put the flowers on my fingers, but the flowers were traditionally known as poisonous, and Mum made sure I always washed my hands thoroughly afterwards.

Iris pseudacorus, or otherwise known as Yellow Iris or Yellow Flag. Lots of them growing along the edges of the loch.

I think this is Caltha palustris, Marsh marigold, also known as Kingcup. This plant contains a toxin that the old time herbalists used to remove warts. I'm not sure about this identification.