Mirador said:Maco, to my understanding all baptisms are formal affairs, and you have your folk herbs mixed up. Ruda (ruta graveolens) is mostly used in abortive preparations, so it is ironic your suggestion that it is used in baptism. You probably mean albahaca (ocimum basilicum), known as sweet basil in English, and extensively used in folk religion baptism rites, together with Holy Water (spring water gathered on Good Friday (Friday before Easter Sunday), and in the Southwest at 'La Aguita' in Maguana Arriba...
Yes, I am aware of the use of albahaca, but ruda is also used in what is called here a "bautizo de agua", which is "informal" in the sense that it is a ritual that takes place in the home, usually as a preliminary step to the more formal Church baptism. I acted as godfather in one such ritual here in the capital, and I was struck by the use of this herb, Ruda, instead of the expected basil. They tell me they use it because it is considered especially sacred. To be sure of the details I just doublechecked again with my wife. I was baptised at La Aguita myself, and i remember the ritual well and with great fondness. They used basil there, you are correct.
Now that you identified the scientific name, however, I was able to find the English name, which as I suspected is "Rue," -- a famous plant with significant biblical connotations. Here is one quick definition of its traditional significance:
"Rue has been used as a medicinal and "antimagic" herb for centuries. It was considered a reliable defense against witches."
So its use makes sense in the bautizo de agua, which is enjoined in part to protect the new soul in its first stage of life here on earth.