Cachapeiro: plant herbaceous from the banks of the river Aliste, up to a meter in height and yellow flowers that smells very strong and not very pleasantly. It is toxic so do not eat animals. Also called it ragwort, ragwort, scientifically Senecio Iacovea. It contains alkaloids that damage the liver and inhibit cell division, so it is thought that it may be a palliative cancer, since this is an abnormal and uncontrolled division of cells of the body's organs. Cell division inhibitor alkaloid is called pyrrolizidina and is present in the plant. The alkaloids are substances, present in plants or mushrooms, psychoactive, i.e., affecting also the brain in different ways, causing nervousness, such as caffeine, or rolling back the pain, such as morphine or increasing the sensation of pleasure and enthusiasm or causing hallucinations or many other ways. Some alkaloids can even cause death.