The way the photo makes it look as though the leaves are down one side of the stem made me look it up, they aren't. Widely used by herbalists and low toxicity, do you use these medicinally?
Remember The Scaffold, Lily the pink? Apparently the inspiration for that was a herbalist called, Lillian Pinkerton. She invented a medicinal compound, for 'women's troubles', and the strap line was 'Most efficacious in every case'. I think you can still get it, it made her the first woman millionaire in her own right, so maybe if you hadn't thought of it before, seems herbalism can be quite profitable