All of them.
Plants are more important for medicine than clothes. There is subsitude for plant fiber available for clothes but there is no subsitude for plant products used in medicine. The synthetic chemicals used as medicine have side effects. the plant products are by and large are quite safe.
Hard to say. Plants were used in medicine from prehistoric time.
whole plant is used for medicine
yes, as a matter of fact, it is.
HYSSOP
Chamomile
Extracts from the plant's root are used in alternative medicine as a soap and as an herbal dietary supplement.
Muira puama is a plant. The plant's wood and root can be used to make medicine. It can be used to treat sexual disorders, an upset stomach, menstrual disorders, sore joints, loss of appetite and other conditions.
The leaves and flowers of the Pearly Everlasting plant are commonly used for their medicinal properties. They are believed to have anti-inflammatory, diuretic, and analgesic effects, and are often used in traditional herbal medicine to treat various conditions.
A sabadilla is a Mexican and Central American plant of the lily family, or the seeds of this plant, commonly used in medicine and insecticides.
Underground Stem
10,000-20,000. source BBC