This beautiful plant can be toxic if eaten and may also be harmful if absorbed via skin. (source
) Its roots have, in the past, been confused with those of Horseradish and used in the kitchen with fatal results.
It wasn't until I saw this particular plant that I realised how it had got its common name here in England - "Monk's Hood", sometimes written as one word. It's amazing how the top petal folds down over the others.
The plant is also known as wolfsbane, leopard's bane, women's bane, Devil's helmet or blue rocket.
According to Wikipedia
it is used "Therapeutically" in some countries, in tiny doses, and can be used to carry medicines through the skin barrier, also in tiny doses. I wouldn't like to try it though..