Scientific name: genus: nicotiana
Tobacco is a plant used worldwide as a legal recreational drug. It is also used to make pesticides. Tobacco is most commonly taken by smoking it in cigarettes, cigars or in a pipe but it can also be chewed or snuffed.
Most tobacco is grown in China, India, Brazil and the United States.
Scientific name: valeriana officinalis
Valerian is a hardy plant with pink or white flowers. The roots of the plant can be used for medicinal purposes, usually by making them into a tea. Valerian has a sedative effect and helps you to sleep.
You may also be interested in red valerian, an unrelated plant with a similar name.
Scientific name: taxus baccata
The yew tree is a kind of conifer originally from parts of Europe, Africa, Iran and Asia. It is a small to medium, slow-growing tree, reaching around 10 to 20 metres high. The leaves and seeds of the tree are very bitter and poisonous. The yew's pine cones are unusual, being more like a berry with a single seed. The berries are eaten by some kinds of birds.