Asteraceae
Nota de aplicación
Family of around 1,600 genera and 24,000 species of herbs, shrubs, vines, and trees. Members of the family have flower heads composed of many small flowers (florets) surrounded by bracts (leaflike structures), with bell-shaped disk florets forming the center of each head. Fossils suggest that the first members of this family may have evolved in Argentina around 50 million years ago.