The term 'medicinal' is used here for a plant that has been, or still is, grown or gathered for healing or relieving pain or other symptoms of illness, even if modern science has not confirmed that the plant is effective or has a recognised mode of action. The emphasis is on the plant and its function in past and present habitats.
The panel shows samples of medicinals and their products: left from top, Rosa rugosa hips and jam, foxglove flowers, mixed herbs, lungwort leaf, and right, aspirin (originally sourced from meadowsweet), opium poppy latex (source of codeine), vervain 'tea' and aconite flowers.