Dandelions are hardy perennials that contain a milky juice and are identifiable by their basal rosettes with often downy leaves. Dandelion is a stemless plant with a simple tap-root and deeply serrated leaves, blooming single bright yellow flowers terminally that appear at almost any time of the year but mainly during April to November.
Traditionally in medicine, the dandelion root was prescribed in medicine to treat rheumatism, gout, and jaundice. The juice of the plant was used topically as a wash for scurvy, eczema or sores, while it was taken internally to treat indigestion and upset stomachs. Modern data supporting claims for dandelion as a diuretic, analgesic, hypoglycemic, or antitumor agent remains limited to animal research.
Information courtesy of Georgetown University Medical Center