Canafleja: Hemlock, ( scientifically conium maculatum ) canahueca, canaloca, plant that was founded on the banks of the river Aliste, initially similar to parsley or celery leaves but with a very bad odor, by touching it, which makes it unmistakable. Precisely why animals don't eat it even if it is very tender. When it grows develops a hollow Reed with knots every 30 or 40 cms and stain purple color on the surface. The " 34 birds of prey; they use it already dry to whistle water coworkers into water gun. This plant contains in its seeds, leaves and root poisonous flavonoids as the coniine. The juice of 7 or 8 grams of plant, especially green seeds, is enough to kill a person. It acts as the curare poison extracted from plants of the Amazon basin by the tribes that live in the rainforest to spread their arrows and hunt all kinds of animals. Poison hemlock already the ancients knew him as we have evidence that the Athenians of the 5th century a. d. C. sentenced to death the philosopher Socrates making him drink juice of hemlock mixed with honey and wine. Hemlock disconnects the vegetative nervous system which is regulated breathing, beating of the heart, digestion, kidneys, everything that makes our body without being aware. Thus it causes death to stop all these organs.